Answer:
Step-by-step explanation:
Q7.
The shortest sides are corresponding in similar triangles
One has side length of 5, another one is 20
Scale factor is:
Since perimeter is sum of 3 sides and each side has 4 times difference, the perimeter will have 4 times the difference. So it is:
Q8.
Dilation doesn't affect angle measures. A and W are corresponding angles and they measure the same.
- m∡A = m∡W
- x + 20 = 5x
- 5x - x = 20
- 4x = 20
- x = 5
m∡W = 5x = 5*5 = 25°
Q9.
Dilation doesn't affect angle measures. B and M are corresponding angles and they measure the same.
- m∡B = m∡M
- 2x + 30 = 3x + 10
- 3x - 20 = 30 - 10
- x = 20
m∡B = 2x + 30 = 2*20 + 30 = 70°
