1. Geometry — Ch. 7 Review 1) Solve for x: 4x+6 = 30x-150 2 30 =
x x+3
-4x+6 = -4x-150
4x+6 = 26x-150
156 = 26x 26
x = 6

2. Geometry — Ch. 7 Review 2) Solve for x: x 8 = 6 5 5x = 48 x = 9.6 8 5

3. Geometry — Ch. 7 Review 3) Solve for x: 11 14 16 x = 11x = 2245 11 14 16 x =
11x = 224
x = 20.36

4. Geometry — Ch. 7 Review 4) Solve for x: x 5 17 8 = 8x = 85 x = 10.6259 x x 5 17 8 = 8 5
8x = 85
x =

5. Geometry — Ch. 7 Review 5) Solve for x: 10 9 22 x = 10x = 198 x = 19.8

6. Geometry — Ch. 7 Review 6) Find the scale factor of DJKL to DPQR:24 40 J K L 27 15
Scale factor = 15:24
Scale factor = 5:8

7. Geometry — Ch. 7 Review
7) The angles of a triangle are in the extended ratio 3:4:5. Find the measure of each angle:
1st angle = 3x
45°
2nd angle = 4x
60°
3rd angle = 5x
75°
3x + 4x + 5x = 180
12x = 180
x = 15

8. Geometry — Ch. 7 Review 8) Given: DCBS ~ DOMD. Find x & y: x 10 6 9 =

9. Geometry — Ch. 7 Review
9) A tree is 42 feet tall and casts a shadow feet long. How tall is the other tree if its shadow is 10 feet?
42’
28’ 42 28 x 10 = x
10’
28x = 420
x = 15’ tall

10. Geometry — Ch. 7 Review
10) Tell if the triangles are similar or not If so, explain which theorem or postulate you used:
If the triangles are similar, then the sides will all be proportional… 7
9.8
11.2 10 14 16

11. YES, We’ve shown that he triangles are similar by using SSS~.
Geometry — Ch. 7 Review
10) Tell if the triangles are similar or not If so, explain which theorem or postulate you used: 7
9.8
11.2 10 14 16
YES, We’ve shown that he triangles are similar by using SSS~. 7 10 14 16
9.8
11.2 = .7 .7 .7