1. Look at Part 1. How can you use the ordered pairs to find the length of \overline {AD}? Why? 

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   Subtract the y-values of point A and point D, because y-coordinates tell you vertical length.

2. What is the length of \overline {AD}?

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   2 units.

3. How can you use the ordered pairs to find the length of \overline{CD}? Why?

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   Subtract the x-values of point C and point D, because x-coordinates tell you horizontal length.

4. What is the length of \overline{CD}?

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   4 units.

5. In Part 2, how can you find the length of the hypotenuse, given the lengths of these legs?

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   Plug the leg lengths into the Pythagorean Theorem.

6. What equation represents the Pythagorean Theorem?

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   a^{2}+b^{2}=c^{2}

7. Plug in 7 and 24 into a^{2}+b^{2}=c^{2}. Do not evaluate. What does the equation look like?

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   7^{2}+24^{2}=c^{2}

8. Simplify the left side. What does c^{2} equal?

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   625

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