   Chapter 4.4, Problem 30E ### 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 27 to 33, complete a formal proof.If two base angles of a trapezoid are congruent, the trapezoid is an isosceles trapezoid.

To determine

To Prove:

If two base angles of a trapezoid are congruent, the trapezoid is an isosceles.

Explanation

Consider the trapezoid RSTV

Given: In trapezoid RSTV RS||VTandVT.

Prove: RSTV is an isosceles trapezoid.

Plan: Draw auxiliary altitudes RX¯andSY¯ in such a way that RX¯VT

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