McGraw Hill Integrated II, 2012
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McGraw Hill Integrated II, 2012 View details
6. Trapezoids and Kites
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Exercise 76 Page 530

Rhombus is a parallelogram with four congruent sides.

10

Practice makes perfect
We want to find FG. Let's review the definition of a rhombus.

A rhombus is a parallelogram with four congruent sides.

Let's draw the graph with that information.

Therefore the sides DF and FG are congruent. It means they have the same lengths. We are given that DF=10. Therefore FG=10.