1. ____° - ____° - 90°, and ____° - ____° - 90°

3. In a 45° right triangle, the hypotenuse is √2 times as long as the legs.

4. √2 times √2 is 2.

6. To go from the hypotenuse length to a leg length, divide instead of multiply.

7. In a 30° right triangle, the longer leg is √3 times as long as the shorter leg, and the hypotenuse is 2 times as long as the shorter leg.

8. Divide to calculate `x`, and then multiply to find `y`.

13. An altitude cuts an equilateral triangle into two 30°-60°-90° triangles.

15. Divide to find the length of a side, and then square that length to get the area of the square.

16. The area of a parallelogram is base times height.

26. The scale factor is 20/30.