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Math
GeometryElementary Geometry for College Students6th Edition

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Chapter 2.4, Problem 46E
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Elementary Geometry for College St...

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

Solutions

Chapter
Section
Problem 1E
Problem 2E
Problem 3E
Problem 4E
Problem 5E
Problem 6E
Problem 7E
Problem 8E
Problem 9E
Problem 10E
Problem 11E
Problem 12E
Problem 13E
Problem 14E
Problem 15E
Problem 16E
Problem 17E
Problem 18E
Problem 19E
Problem 20E
Problem 21E
Problem 22E
Problem 23E
Problem 24E
Problem 25E
Problem 26E
Problem 27E
Problem 28E
Problem 29E
Problem 30E
Problem 31E
Problem 32E
Problem 33E
Problem 34E
Problem 35E
Problem 36E
Problem 37E
Problem 38E
Problem 39E
Problem 40E
Problem 41E
Problem 42E
Problem 43E
Problem 44E
Problem 45E
Problem 46E
Problem 47E
Problem 48E
Problem 49E
Problem 50E
BuyFindarrow_forward

Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698
Textbook Problem
8 views

In Exercises 45 to 47, write a formal proof for each corollary.

If two angles of one triangle are congruent to two angles of another triangle, then the third angles are also congruent.

To determine

To prove:

The third angles are also congruent if two angles of one triangle are congruent to two angles of another triangle.

Explanation

Approach:

The sum of the three angles in a triangle is 180°.

If the two angles of triangles are congruent, then the measures of the angles are same.

Calculation:

Consider the triangle ΔABC and ΔPQR.

Figure (1)

Calculate the angles of triangle ΔABC.

m∠1+m∠2+m∠3=180°……(1)

Calculate the angles of triangle ΔPQR.

m∠4+m∠5+m∠6=180°……(2)

Substitute equation (2) in the equation (1).

m∠1+m∠2+m∠3=m∠4+m∠5+m∠6m∠2=m∠5

Since, the two angles of different triangle are same

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Chapter 2.4,
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Problem 47E
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