Honors Geometry Companion Book, Volume 2

9.1.1 Developing Formulas for Triangles and Quadrilaterals − Worksheet

Example 1: Find each measurement. 1. the area of the parallelogram

2. the height of the rectangle, in which A = 10 x 2 ft 2

10 cm

12 cm

3. the perimeter of a square in which A = 169 cm 2

Example 2: Find each measurement. 4. the area of the trapezoid

5. the base of the triangle, in which A = 58.5 in 2

20 m

9 m

15 m

6. b 1 of a trapezoid in which A = (48 x + 68) in

2 , h = 8 in., and b

2 = (9 x + 12) in.

Example 3: Find each measurement. 7. the area of the rhombus

8.  d 2 of the kite, in which A = 187.5 m 2

15 m

25 in.

14 in.

111

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