   Chapter 2.4, Problem 10E ### 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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# In Exercises 9 and 10, classify the triangle (not shown) by considering the measures of its angles. a) In Δ X Y Z , m ∠ X = 123 ° . b) In Δ R S T , m ∠ R = 45 ° , m ∠ S = 65 ° and m ∠ T = 70 ° .

To determine

a)

To classify:

The nature of given triangle.

Explanation

Given:

The given statement is,

In ΔXYZ,

mX=123°

Definition:

In a triangle, if the measure of an angle is greater than 90°, then the triangle is obtuse triangle.

Approach:

In ΔXYZ<

To determine

(b)

To classify:

The nature of given triangle.

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