1. Worksheet Practice 12-2 Mrs. Rivas International Studies Charter School c² = a² + b² (x + 5)² = x² + 8² (x + 5)(x + 5) + 25+ 5x x²x² x² + 10x + 25 x² + 10x + 25 = x² + 64 10x + 25 = 64 10x = 39 x = 3.9

2. Worksheet Practice 12-2 c² = a² + b² (x + 9)² = x² + 16² (x + 9)(x + 9) + 81+ 9x x²x² x² + 18x + 81 x² + 18x + 81 = x² + 256 18x + 81 = 256 18x = 175 x = 9.7 Mrs. Rivas International Studies Charter School

3. Worksheet Practice 12-2 Mrs. Rivas International Studies Charter School

4. Worksheet Practice 12-2 Mrs. Rivas International Studies Charter School

5. Worksheet Practice 12-2 Both chords are 3 units from the center. 8 Mrs. Rivas International Studies Charter School

6. Worksheet Practice 12-2 Since chords are equal, they are equidistance to the center. Mrs. Rivas International Studies Charter School

7. Worksheet Practice 12-2 6.3 Mrs. Rivas International Studies Charter School

8. Worksheet Practice 12-2 9 7 c² = a² + b² 9² = 7² + x² 81 = 49 + x²  ¯¯ = x²32 5.7 = x Mrs. Rivas International Studies Charter School

9. Worksheet Practice 12-2 x 5 c² = a² + b² x² = 5² + 4.2² x² = 25 + 17.64 x² =  ¯¯¯¯42.64 x = 6.5 Mrs. Rivas International Studies Charter School

10. Worksheet Practice 12-2 c² = a² + b² 15² = 8² + x² 225 = 64 + x²  ¯¯¯ = x²161 12.6885 = x Mrs. Rivas International Studies Charter School

11. Worksheet Practice 12-2 6 4 x c² = a² + b² x² = 4² + 6² x² = 16 + 36 x² =  ¯¯52 x = 7.2 Mrs. Rivas International Studies Charter School

12. Worksheet Practice 12-2 15 16 x x c² = a² + b² 16² = 15² + x² 256 = 225 + x²  ¯¯ = x²31 5.5677 = x Mrs. Rivas International Studies Charter School

13. Worksheet Practice 12-2 12 4.5 xx c² = a² + b² 12² = 4.5² + x² 144 = 20.25 + x²  ¯¯¯¯¯ = x²123.75 11.1242 = x Mrs. Rivas International Studies Charter School

14. Worksheet Practice 12-2 c² = a² + b² 15² = 3² + x² 225 = 9 + x²  ¯¯¯ = x²216 14.7 = x Mrs. Rivas International Studies Charter School