   Chapter 5.3, Problem 21E ### 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 17 to 24, complete each proof.Given: R Q M N = R S N P = Q S M P Prove: ∠ N ≅ ∠ R PROOF Statements Reasons 1. ?2. ?3. ? 1. Given2. S S S ∼ 3. CASTC

To determine

To prove:

The statement NR if the proportions are given RQMN=RSNP=QSMP.

Explanation

Definition:

SSS :

If three sides of one triangle are proportional (in length) to three corresponding sides of a second triangle, then the triangles are similar.

CASTC:

Corresponding angles of similar triangles are congruent.

Description:

Given that RQMN=RSNP=QSMP.

The given figure is shown below.

Figure

From the given figure, it is observed that RQMN=RSNP=QSMP are three sides of a triangle QRS are proportional to three corresponding sides of a triangle MNP.

The above mentioned SSS definition, the two triangles MNP and QRS are similar since the three sides of one triangle are proportional to three corresponding sides of a second triangle. Hence, ΔMNPΔQRS

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