2. Week 14 day 1 6 A ceramic tile is in the shape of a 30°-60°-90° triangle. The side across from the 30° angle is 6.25 cm long. How long is the hypotenuse of the tile? 3.125 cm 6.25 3 cm 12.5 cm 15 cm A B C D

3. 6.4 Special Parallelograms Pardekooper

4. What makes a rhombus special? All sides are congruent Pardekooper

5. What makes a rectangle special? Four right angles Pardekooper

6. Put them together and what do you have? A square Pardekooper

7. Now, we look at some theorems Each diagonal of a rhombus bisects two angles of the rhombus. Pardekooper

8. Now, we look at some theorems The diagonals of a rhombus are perpendicular. Pardekooper

9. The diagonals of a rectangle are congruent. Pardekooper

10. If one diagonal of a parallelogram bisects two angles of the parallelogram, then the parallelogram is a rhombus. Pardekooper

11. If the diagonal of a parallelogram are perpendicular, then the parallelogram is a rhombus. Pardekooper

12. If the diagonal of a parallelogram are congruent, then the parallelogram is a rectangle. Pardekooper

13. OK, here comes a problem. ABCD is a rhombus. Solve for X, Y, & Z. Z = 26 0 Y = 128 0 Y+26 0 +26 0 = 180 0 Y+52 0 = 180 0 -52 0 -52 0 X = 128 0 A B C D 26 0 Y X Z Pardekooper

14. And now the assignment. Pardekooper

15. Assignment Workbook Page 363 all

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