B. The diagonals of a rectangle are perpendicular.

C. A quadrilateral is a polygon with four angles.

D. The diagonals of a rhombus are perpendicular and bisect each other.

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the answer is 31.27mph

2. B. They are both supplementary.

3. D. Trapezoid

4. A. Rectangle

5. C. Congruent

6. B. Quadrilateral

7. B. Diagonal

8. D. Trapezoid

9. B. Rhombus

10. C. 90

11. D. The diagonals of a rhombus are congruent and perpendicular to each other.

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