   Chapter 2.4, Problem 9E ### 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
1 views

# In Exercises 9 and 10, classify the triangle (not shown) by considering the measures of its angles. a) All angles of Δ A B C measure 60 ° . b) In Δ D E F , m ∠ D = 40 ° and m ∠ E = 50 ° .

To determine

a)

To classify:

The nature of given triangle ΔABC.

Explanation

Given:

All angles of ΔABC measure 60°.

Definition:

In a triangle, if all the angles are congruent, then the triangle is equiangular triangle.

Approach:

All angles of ΔABC measure 60°

To determine

(b)

To classify:

The nature of given triangle ΔABC.

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