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Prove triangle ABC is congruent to triangle DBE.

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1. Write a proof. AB*BE = CB*BD. Prove triangle ABC is congruent to triangle DBE.

2. A parent group wants to double the area of a playground. The measurements of the playground are width is 2W and the length is 2L. They ask you to comment. What would you say?

3. Find the length of the altitude drawn to the hypotenuse. The legs of the right triangle are 160 ft and 120 ft. The hypotenuse is 144 ft.

4. The area of a regular octagon is 35 cm^3. What is the area of a regular octagon with sides three times as large?

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