9.1 Review Worksheet
9.1.1 Developing Formulas for Triangles and Quadrilaterals Find each measurement. 1. the height of the parallelogram, in which A = 7.5 m 2 2. the perimeter of the rectangle
( x – 1) in.
( x + 2) in.
6 m
3. the area of a parallelogram in which b = (3 x + 5) ft and h = (7 x − l) ft
4. the area of the triangle
5. the height of the trapezoid, in which A = 280 cm 2
17 in.
25 in.
15 in.
20 cm
8 cm
6. the area of a triangle in which b = ( x + 1) ft and h = 8 x ft
7. the area of the kite
8. d 2 of the rhombus, in which A = (3 x
2 + 6 x ) m 2
14 in.
7 3 in. √
( x + 2) m
14 √ 3 in.
127
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