2. quadrilateral consecutive congruent perpendicular = 90 o congruent bisect

3. 12 12 cm

4. 12 12 cm a 2 + b 2 = c 2 = c 2 12 2 + 9 2 144 + 81 = c 2 225 = c 2 = 15 15 cm c

5. 12 12 cm a 2 + b 2 = c 2 = c 2 12 2 + 9 2 144 + 81 = c 2 225 = c 2 = 15 15 cm c c = c 2 12 2 + 16 2 144 + 256 = c 2 400 = c 2 = 20 20 cm

6. 12 12 cm a 2 + b 2 = c 2 = c 2 12 2 + 9 2 144 + 81 = c 2 225 = c 2 = 15 15 cm c c = c 2 12 2 + 16 2 144 + 256 = c 2 400 = c 2 = 20 20 cm 90 o * 180 – ___ – ___ 90 53 90 o

7. _____ = _____ 212x + 7 – 7 14 = 2x 2 2 = x 7 2(7) + 7 = 21 3(7) – 12= 9 7 + 2= 9

8. B A D Prove: There are two pairs of consecutive sides have the same length. C (Distance formula)

9. B A D Prove: There are two pairs of consecutive sides have the same length. C (Distance formula) (___) 2 + (___) 2 3 1 10 (___) 2 + (___) 2 3 1 17

10. B A D Prove: There are two pairs of consecutive sides have the same length. C (Distance formula) (___) 2 + (___) 2 3 1 10 (___) 2 + (___) 2 3 1 17 (___) 2 + (___) 2 3 4 25 (___) 2 + (___) 2 5 0 25

11. Quadrilateral Kite Trapezoid Isosceles Trapezoid Parallelogram Rhombus Rectangle Square

12. Quadrilateral Kite Trapezoid

13. Isosceles Trapezoid Parallelogram

14. Isosceles Trapezoid Parallelogram Rhombus Rectangle Square

15. Quad. Kite Trapezoid Isosceles Trapezoid Parallelogram Rhombus Rectangle Square X

16. Quad. Kite Trapezoid Isosceles Trapezoid Parallelogram Rhombus Rectangle Square X True

17. Quad. Kite Trapezoid Isosceles Trapezoid Parallelogram Rhombus Rectangle Square X True False

18. Quad. Kite Trapezoid Isosceles Trapezoid Parallelogram Rhombus Rectangle Square X True False

19. Quad. Kite Trapezoid Isosceles Trapezoid Parallelogram Rhombus Rectangle Square X True False

20. Quad. Kite Trapezoid Isosceles Trapezoid Parallelogram Rhombus Rectangle Square X True False True