Chapter 5.4, Problem 14E

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7th Edition

Alexander + 2 others

ISBN: 9781337614085

Textbook Problem

Determine the type of triangle represented if the lengths of its sides are:

a) *a=*1.5, *b=* 2 and *c = *2.5

b)* a= *20, *b=* 21 and *c = *29

c) *a=*10, *b=* 12, and *c =*16

d) *a= *5, *b=* 7 and *c = *9

To determine

(a)

**To Find:**

Type of the triangle.

Explanation

Given

Let *a, b *and *c *are the lengths of the three sides of the triangle, with *c* is the longest side, then

From the triangle theorems,

1. If the square of the length of the longest side is greater than the sum of square of the lengths of other two sides then the triangle is Obtuse.

2. If the square of the length of the longest side is less than the sum of square of the lengths of other two sides then the triangle is Acute.

3. If the square of the length of the longest side is equal to the sum of square of the lengths of other two sides then the triangle is Right triangle.

Here given *a=*1

To determine

(b)

**To Find:**

Type of the triangle.

To determine

(c)

**To Find:**

Type of the triangle.

To determine

(d)

**To Find:**

Type of the triangle.

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