   Chapter 9.2, Problem 14E ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698

#### Solutions

Chapter
Section ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698
Textbook Problem
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# Refer to the prisms of Exercises 1 and 2. Which of these have symmetry with respect to one (or more) plane(s)?

To determine

To find:

The prism that has symmetry with respect to one (or more) plane(s).

Explanation

Given:

The prism from Exercise given below

1. a)

Bases are not regular.

1. b)

Bases are not regular.

2. a)

Bases are regular.

2. b)

Bases are not regular.

Properties Used:

Symmetry is when two or more parts are identical after a flip, slide or turn. A plane of symmetry is an imaginary plane along which the figure is flipped, slides or turned to get two or more identical parts.

To have this type of symmetry, a plane can be drawn for which each point of the space figure has a corresponding point on the opposite side of the plane at the same distance from the plane as shown in figure below

Calculation:

In the figure given below

draw a plane by joining the midpoints of the vertical edges

Since, each point of the space figure has a corresponding point on the opposite side of the plane at the same distance from the plane. Hence, it has symmetry with respect to one (or more) plane(s).

In the figure given below

draw a plane by joining the midpoints of the vertical edges

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