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Elementary Geometry for College St...

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

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BuyFindarrow_forward

Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698
Textbook Problem
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Review Exercises

Given: D E is a median of A D C
B E - F D -
E F - F D -
Prove: A B C D is a

Chapter 4.CR, Problem 27CR, Review Exercises Given: DE is a median of ADC BE-FD- EF-FD- Prove: ABCD is a

To determine

To Prove:

The provided quadrilateral ABCF is a parallelogram.

Explanation

Proof:

Definition:

A median of a triangle is a line segment joining a vertex to the midpoint of the opposite side, thus bisecting that side. Every triangle has exactly three medians, one from each vertex, and they all intersect each other at the triangle’s centroid.

Theorem on parallelogram:

If the diagonals of a quadrilateral bisect each other, then it is a parallelogram.

Description:

It is given that DE is a median of ADC with BE-FD- and EF-FD-.

BE-FD-EF-. That is, BE-EF-

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