a) Answer There are infinite numbers of planes that are tangent to each of the spheres. Explanation Given Information: Given figure, Calculation: Consider three spheres as shown in the figure below. It is required to find the number of planes that can be drawn tangent to each of the spheres. A sphere is a locus of points in a space which are equidistant from a fixed point. There are infinite numbers of points on the surface of a sphere. Through each of these points, a plane can be drawn tangent to the surface of a sphere. Therefore, there are infinite numbers of planes that are tangent to each of the spheres. b) To determine To find: the number of spheres that can be drawn tangent to all three spheres. Answer There can be only one such sphere which lies at the center of three spheres. Explanation Given Information: Given figure, Calculation: It is required to find the number of spheres which are tangent to each of the spheres. The above figure shows three spheres, two in a row and then one directly above this row. The three spheres seem congruent to each other. It is required to draw spheres which are tangent to all the three given spheres. There can be only one such sphere which lies at the center of three spheres. The figure is shown below:

McDougal Littell Jurgensen Geometry: Student Edition Geometry

5th Edition

ISBN: 9780395977279

Author: Ray C. Jurgensen, Richard G. Brown, John W. Jurgensen

Publisher: Houghton Mifflin Company College Division

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Question

Chapter 9.2, Problem 21WE

To determine

To find: the number of planes that can be drawn tangent to each of the spheres.

Expert Solution

Answer to Problem 21WE

There are infinite numbers of planes that are tangent to each of the spheres.

Explanation of Solution

Given Information:

Given figure,

McDougal Littell Jurgensen Geometry: Student Edition Geometry, Chapter 9.2, Problem 21WE , additional homework tip 1

Calculation:

Consider three spheres as shown in the figure below.

McDougal Littell Jurgensen Geometry: Student Edition Geometry, Chapter 9.2, Problem 21WE , additional homework tip 2

It is required to find the number of planes that can be drawn tangent to each of the spheres.

A sphere is a locus of points in a space which are equidistant from a fixed point.

There are infinite numbers of points on the surface of a sphere.

Through each of these points, a plane can be drawn tangent to the surface of a sphere.

Therefore, there are infinite numbers of planes that are tangent to each of the spheres.

To determine

To find: the number of spheres that can be drawn tangent to all three spheres.

Expert Solution

Answer to Problem 21WE

There can be only one such sphere which lies at the center of three spheres.

Explanation of Solution

Given Information:

Given figure,

McDougal Littell Jurgensen Geometry: Student Edition Geometry, Chapter 9.2, Problem 21WE , additional homework tip 3

Calculation:

It is required to find the number of spheres which are tangent to each of the spheres.

The above figure shows three spheres, two in a row and then one directly above this row.

The three spheres seem congruent to each other.

It is required to draw spheres which are tangent to all the three given spheres.

There can be only one such sphere which lies at the center of three spheres.

The figure is shown below:

McDougal Littell Jurgensen Geometry: Student Edition Geometry, Chapter 9.2, Problem 21WE , additional homework tip 4

Chapter 9.2, Problem 20WE

Chapter 9.2, Problem 22WE

Chapter 9 Solutions

McDougal Littell Jurgensen Geometry: Student Edition Geometry

Ch. 9.1 - Prob. 1CE Ch. 9.1 - Prob. 2CE Ch. 9.1 - Prob. 3CE Ch. 9.1 - Prob. 4CE Ch. 9.1 - Prob. 5CE Ch. 9.1 - Prob. 6CE Ch. 9.1 - Prob. 7CE Ch. 9.1 - Prob. 8CE Ch. 9.1 - Prob. 9CE Ch. 9.1 - Prob. 10CE

Ch. 9.1 - Prob. 11CE Ch. 9.1 - Prob. 1WE Ch. 9.1 - Prob. 2WE Ch. 9.1 - Prob. 3WE Ch. 9.1 - Prob. 4WE Ch. 9.1 - Prob. 5WE Ch. 9.1 - Prob. 6WE Ch. 9.1 - Prob. 7WE Ch. 9.1 - Prob. 8WE Ch. 9.1 - Prob. 9WE Ch. 9.1 - Prob. 10WE Ch. 9.1 - Prob. 11WE Ch. 9.1 - Prob. 12WE Ch. 9.1 - Prob. 13WE Ch. 9.1 - Prob. 14WE Ch. 9.1 - Prob. 15WE Ch. 9.1 - Prob. 16WE Ch. 9.1 - Prob. 17WE Ch. 9.1 - Prob. 18WE Ch. 9.1 - Prob. 19WE Ch. 9.1 - Prob. 20WE Ch. 9.1 - Prob. 1E Ch. 9.1 - Prob. 2E Ch. 9.1 - Prob. 3E Ch. 9.1 - Prob. 4E Ch. 9.1 - Prob. 5E Ch. 9.2 - Prob. 1CE Ch. 9.2 - Prob. 2CE Ch. 9.2 - Prob. 3CE Ch. 9.2 - Prob. 4CE Ch. 9.2 - Prob. 5CE Ch. 9.2 - Prob. 1WE Ch. 9.2 - Prob. 2WE Ch. 9.2 - Prob. 3WE Ch. 9.2 - Prob. 4WE Ch. 9.2 - Prob. 5WE Ch. 9.2 - Prob. 6WE Ch. 9.2 - Prob. 7WE Ch. 9.2 - Prob. 8WE Ch. 9.2 - Prob. 9WE Ch. 9.2 - Prob. 10WE Ch. 9.2 - Prob. 11WE Ch. 9.2 - Prob. 12WE Ch. 9.2 - Prob. 13WE Ch. 9.2 - Prob. 14WE Ch. 9.2 - Prob. 15WE Ch. 9.2 - Prob. 16WE Ch. 9.2 - Prob. 17WE Ch. 9.2 - Prob. 18WE Ch. 9.2 - Prob. 19WE Ch. 9.2 - Prob. 20WE Ch. 9.2 - Prob. 21WE Ch. 9.2 - Prob. 22WE Ch. 9.2 - Prob. 23WE Ch. 9.2 - Prob. 1MRE Ch. 9.2 - Prob. 2MRE Ch. 9.2 - Prob. 3MRE Ch. 9.3 - Prob. 1CE Ch. 9.3 - Prob. 2CE Ch. 9.3 - Prob. 3CE Ch. 9.3 - Prob. 4CE Ch. 9.3 - Prob. 5CE Ch. 9.3 - Prob. 6CE Ch. 9.3 - Prob. 7CE Ch. 9.3 - Prob. 8CE Ch. 9.3 - Prob. 9CE Ch. 9.3 - Prob. 10CE Ch. 9.3 - Prob. 11CE Ch. 9.3 - Prob. 12CE Ch. 9.3 - Prob. 13CE Ch. 9.3 - Prob. 1WE Ch. 9.3 - Prob. 2WE Ch. 9.3 - Prob. 3WE Ch. 9.3 - Prob. 4WE Ch. 9.3 - Prob. 5WE Ch. 9.3 - Prob. 6WE Ch. 9.3 - Prob. 7WE Ch. 9.3 - Prob. 8WE Ch. 9.3 - Prob. 9WE Ch. 9.3 - Prob. 10WE Ch. 9.3 - Prob. 11WE Ch. 9.3 - Prob. 12WE Ch. 9.3 - Prob. 13WE Ch. 9.3 - Prob. 14WE Ch. 9.3 - Prob. 15WE Ch. 9.3 - Prob. 16WE Ch. 9.3 - Prob. 17WE Ch. 9.3 - Prob. 18WE Ch. 9.3 - Prob. 19WE Ch. 9.3 - Prob. 20WE Ch. 9.3 - Prob. 21WE Ch. 9.3 - Prob. 22WE Ch. 9.3 - Prob. 23WE Ch. 9.3 - Prob. 24WE Ch. 9.4 - Prob. 1CE Ch. 9.4 - Prob. 2CE Ch. 9.4 - Prob. 3CE Ch. 9.4 - Prob. 4CE Ch. 9.4 - Prob. 5CE Ch. 9.4 - Prob. 6CE Ch. 9.4 - Prob. 7CE Ch. 9.4 - Prob. 1WE Ch. 9.4 - Prob. 2WE Ch. 9.4 - Prob. 3WE Ch. 9.4 - Prob. 4WE Ch. 9.4 - Prob. 5WE Ch. 9.4 - Prob. 6WE Ch. 9.4 - Prob. 7WE Ch. 9.4 - Prob. 8WE Ch. 9.4 - Prob. 9WE Ch. 9.4 - Prob. 10WE Ch. 9.4 - Prob. 11WE Ch. 9.4 - Prob. 12WE Ch. 9.4 - Prob. 13WE Ch. 9.4 - Prob. 14WE Ch. 9.4 - Prob. 15WE Ch. 9.4 - Prob. 16WE Ch. 9.4 - Prob. 17WE Ch. 9.4 - Prob. 18WE Ch. 9.4 - Prob. 19WE Ch. 9.4 - Prob. 20WE Ch. 9.4 - Prob. 21WE Ch. 9.4 - Prob. 22WE Ch. 9.4 - Prob. 23WE Ch. 9.4 - Prob. 24WE Ch. 9.4 - Prob. 25WE Ch. 9.4 - Prob. 26WE Ch. 9.4 - Prob. 27WE Ch. 9.4 - Prob. 1ST1 Ch. 9.4 - Prob. 2ST1 Ch. 9.4 - Prob. 3ST1 Ch. 9.4 - Prob. 4ST1 Ch. 9.4 - Prob. 5ST1 Ch. 9.4 - Prob. 6ST1 Ch. 9.5 - Prob. 1CE Ch. 9.5 - Prob. 2CE Ch. 9.5 - Prob. 3CE Ch. 9.5 - Prob. 4CE Ch. 9.5 - Prob. 5CE Ch. 9.5 - Prob. 6CE Ch. 9.5 - Prob. 7CE Ch. 9.5 - Prob. 8CE Ch. 9.5 - Prob. 9CE Ch. 9.5 - Prob. 10CE Ch. 9.5 - Prob. 11CE Ch. 9.5 - Prob. 12CE Ch. 9.5 - Prob. 13CE Ch. 9.5 - Prob. 14CE Ch. 9.5 - Prob. 1WE Ch. 9.5 - Prob. 2WE Ch. 9.5 - Prob. 3WE Ch. 9.5 - Prob. 4WE Ch. 9.5 - Prob. 5WE Ch. 9.5 - Prob. 6WE Ch. 9.5 - Prob. 7WE Ch. 9.5 - Prob. 8WE Ch. 9.5 - Prob. 9WE Ch. 9.5 - Prob. 10WE Ch. 9.5 - Prob. 11WE Ch. 9.5 - Prob. 12WE Ch. 9.5 - Prob. 13WE Ch. 9.5 - Prob. 14WE Ch. 9.5 - Prob. 15WE Ch. 9.5 - Prob. 16WE Ch. 9.5 - Prob. 17WE Ch. 9.5 - Prob. 18WE Ch. 9.5 - Prob. 19WE Ch. 9.5 - Prob. 20WE Ch. 9.5 - Prob. 21WE Ch. 9.5 - Prob. 22WE Ch. 9.5 - Prob. 23WE Ch. 9.5 - Prob. 24WE Ch. 9.5 - Prob. 25WE Ch. 9.5 - Prob. 26WE Ch. 9.5 - Prob. 27WE Ch. 9.5 - Prob. 28WE Ch. 9.5 - Prob. 29WE Ch. 9.5 - Prob. 1MRE Ch. 9.5 - Prob. 2MRE Ch. 9.5 - Prob. 3MRE Ch. 9.5 - Prob. 4MRE Ch. 9.5 - Prob. 5MRE Ch. 9.5 - Prob. 6MRE Ch. 9.6 - Prob. 1CE Ch. 9.6 - Prob. 2CE Ch. 9.6 - Prob. 3CE Ch. 9.6 - Prob. 4CE Ch. 9.6 - Prob. 5CE Ch. 9.6 - Prob. 6CE Ch. 9.6 - Prob. 7CE Ch. 9.6 - Prob. 8CE Ch. 9.6 - Prob. 9CE Ch. 9.6 - Prob. 10CE Ch. 9.6 - Prob. 1WE Ch. 9.6 - Prob. 2WE Ch. 9.6 - Prob. 3WE Ch. 9.6 - Prob. 4WE Ch. 9.6 - Prob. 5WE Ch. 9.6 - Prob. 6WE Ch. 9.6 - Prob. 7WE Ch. 9.6 - Prob. 8WE Ch. 9.6 - Prob. 9WE Ch. 9.6 - Prob. 10WE Ch. 9.6 - Prob. 11WE Ch. 9.6 - Prob. 12WE Ch. 9.6 - Prob. 13WE Ch. 9.6 - Prob. 14WE Ch. 9.6 - Prob. 15WE Ch. 9.6 - Prob. 16WE Ch. 9.6 - Prob. 17WE Ch. 9.6 - Prob. 18WE Ch. 9.6 - Prob. 19WE Ch. 9.6 - Prob. 20WE Ch. 9.6 - Prob. 21WE Ch. 9.6 - Prob. 22WE Ch. 9.6 - Prob. 23WE Ch. 9.6 - Prob. 24WE Ch. 9.6 - Prob. 25WE Ch. 9.6 - Prob. 26WE Ch. 9.6 - Prob. 27WE Ch. 9.6 - Prob. 28WE Ch. 9.6 - Prob. 29WE Ch. 9.6 - Prob. 30WE Ch. 9.6 - Prob. 31WE Ch. 9.6 - Prob. 32WE Ch. 9.6 - Prob. 1EX Ch. 9.6 - Prob. 2EX Ch. 9.6 - Prob. 3EX Ch. 9.7 - Prob. 1CE Ch. 9.7 - Prob. 2CE Ch. 9.7 - Prob. 3CE Ch. 9.7 - Prob. 4CE Ch. 9.7 - Prob. 5CE Ch. 9.7 - Prob. 6CE Ch. 9.7 - Prob. 7CE Ch. 9.7 - Prob. 1WE Ch. 9.7 - Prob. 2WE Ch. 9.7 - Prob. 3WE Ch. 9.7 - Prob. 4WE Ch. 9.7 - Prob. 5WE Ch. 9.7 - Prob. 6WE Ch. 9.7 - Prob. 7WE Ch. 9.7 - Prob. 8WE Ch. 9.7 - Prob. 9WE Ch. 9.7 - Prob. 10WE Ch. 9.7 - Prob. 11WE Ch. 9.7 - Prob. 12WE Ch. 9.7 - Prob. 13WE Ch. 9.7 - Prob. 14WE Ch. 9.7 - Prob. 15WE Ch. 9.7 - Prob. 16WE Ch. 9.7 - Prob. 17WE Ch. 9.7 - Prob. 18WE Ch. 9.7 - Prob. 19WE Ch. 9.7 - Prob. 20WE Ch. 9.7 - Prob. 21WE Ch. 9.7 - Prob. 22WE Ch. 9.7 - Prob. 23WE Ch. 9.7 - Prob. 24WE Ch. 9.7 - Prob. 25WE Ch. 9.7 - Prob. 26WE Ch. 9.7 - Prob. 27WE Ch. 9.7 - Prob. 28WE Ch. 9.7 - Prob. 1ST2 Ch. 9.7 - Prob. 2ST2 Ch. 9.7 - Prob. 3ST2 Ch. 9.7 - Prob. 4ST2 Ch. 9.7 - Prob. 5ST2 Ch. 9.7 - Prob. 6ST2 Ch. 9.7 - Prob. 7ST2 Ch. 9.7 - Prob. 8ST2 Ch. 9.7 - Prob. 1E Ch. 9.7 - Prob. 2E Ch. 9.7 - Prob. 3E Ch. 9.7 - Prob. 4E Ch. 9.7 - Prob. 5E Ch. 9 - Prob. 1CR Ch. 9 - Prob. 2CR Ch. 9 - Prob. 3CR Ch. 9 - Prob. 4CR Ch. 9 - Prob. 5CR Ch. 9 - Prob. 6CR Ch. 9 - Prob. 7CR Ch. 9 - Prob. 8CR Ch. 9 - Prob. 9CR Ch. 9 - Prob. 10CR Ch. 9 - Prob. 11CR Ch. 9 - Prob. 12CR Ch. 9 - Prob. 13CR Ch. 9 - Prob. 14CR Ch. 9 - Prob. 15CR Ch. 9 - Prob. 16CR Ch. 9 - Prob. 17CR Ch. 9 - Prob. 18CR Ch. 9 - Prob. 19CR Ch. 9 - Prob. 20CR Ch. 9 - Prob. 21CR Ch. 9 - Prob. 22CR Ch. 9 - Prob. 23CR Ch. 9 - Prob. 24CR Ch. 9 - Prob. 1CT Ch. 9 - Prob. 2CT Ch. 9 - Prob. 3CT Ch. 9 - Prob. 4CT Ch. 9 - Prob. 5CT Ch. 9 - Prob. 6CT Ch. 9 - Prob. 7CT Ch. 9 - Prob. 8CT Ch. 9 - Prob. 9CT Ch. 9 - Prob. 10CT Ch. 9 - Prob. 11CT Ch. 9 - Prob. 12CT Ch. 9 - Prob. 13CT Ch. 9 - Prob. 14CT Ch. 9 - Prob. 15CT Ch. 9 - Prob. 16CT Ch. 9 - Prob. 17CT Ch. 9 - Prob. 18CT Ch. 9 - Prob. 1CUR Ch. 9 - Prob. 2CUR Ch. 9 - Prob. 3CUR Ch. 9 - Prob. 4CUR Ch. 9 - Prob. 5CUR Ch. 9 - Prob. 6CUR Ch. 9 - Prob. 7CUR Ch. 9 - Prob. 8CUR Ch. 9 - Prob. 9CUR Ch. 9 - Prob. 10CUR Ch. 9 - Prob. 11CUR Ch. 9 - Prob. 12CUR Ch. 9 - Prob. 13CUR Ch. 9 - Prob. 14CUR Ch. 9 - Prob. 15CUR Ch. 9 - Prob. 16CUR Ch. 9 - Prob. 17CUR Ch. 9 - Prob. 18CUR Ch. 9 - Prob. 19CUR Ch. 9 - Prob. 20CUR Ch. 9 - Prob. 21CUR Ch. 9 - Prob. 22CUR Ch. 9 - Prob. 23CUR Ch. 9 - Prob. 24CUR Ch. 9 - Prob. 25CUR Ch. 9 - Prob. 26CUR Ch. 9 - Prob. 27CUR Ch. 9 - Prob. 28CUR Ch. 9 - Prob. 29CUR Ch. 9 - Prob. 30CUR

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