9.2 Review Worksheet (continued)
9. In which two figures do the rectangles cover the same area? Explain your reasoning.
A
B
C
y
y
y
4
4
4
x
x
x
0
0
0
4
4
4
9.2.2 Effects of Changing Dimensions Proportionally Describe the effect of each change on the area of the given figure. 10. The height of the triangle with vertices (1, 5), (2, 3), and ( − 1, − 6) is multiplied by 4.
11. The base of the parallelogram is multiplied by 2 3 .
9 in.
24 in.
Describe the effect of each change on the perimeter or circumference and the area of the given figure. 12. The base and height of the triangle are both doubled.
10 cm
13. The radius of the circle with center (0, 0) that passes through (5, 0) is multiplied by
3 5
.
14. A circle has a circumference of 16 π mm. If you multiply the area by 1 3
, what happens to the
radius?
150
Made with FlippingBook - PDF hosting