1. Similar Figures Trashketball
7th Grade Math Team

2. Rules of Trashketball Answer the question that appears on the screen.
All members of the group must participate.
All white board answers must be the same.
Everyone in the group gets a turn to shoot.
If it is not your turn to shoot you are seated.
Each team gets three shots per round.
If you do not get the question correct as a group your group does not shoot!!
RED cup still working
GREEN cup ready to check

3. Loss of points Shooting out of turn When its not time to shoot
Playing and inappropriate behavior
Bad sportsmanship

4. Any Questions?

5. Question 1
Trapezoid ABCD is similar to trapezoid RSTU. What equation can be used to find the length of side ST?

6. Question 1 Answer D.

7. Question 2
Are the polygons similar or not similar?

8. Question 2 answer
Not Similar

9. Question 3
Stefano holds up an 8-inch pencil 32 inches from his eye. The pencil fills the image of a sculpture that is 40 feet away. How tall is the sculpture?
10 feet
14 feet
8 feet
16 feet
22 feet

10. Question 3 answer
10 feet

11. Question 4
Ear pair of polygons in similar. Determine the missing side.

12. Question 4 answer
4mm

13. Question 5
You are standing 21 feet from a tree. You have a 25- inch stick you are holding 35 inches from your eye. You see that the top of the tree exactly matches the top of the stick you are holding. The bottom of the stick exactly matches the bottom of the tree. How tall is the tree?
14 feet
46 feet
15 feet
17 feet
7 feet

14. Question 5 answer
15 feet

15. Question 6
The length of a rectangle is 12 centimeters and the width is 5 centimeters. A similar rectangle has a width of 3 centimeters. What is the length of the second rectangle?

16. Question 6 answer
7.2 centimeters

17. Question 7
Are the polygons similar or not similar?

18. Question 7 answer
Not similar

19. Question 8
Mary is 70 inches tall and casts a 28-inch shadow. Her daughter, who is standing next to her, casts a 17-inch shadow. How tall is her daughter?

20. Question 8 answer
42.5 inches

21. Question 9
Are the polygons similar or not similar?

22. Question 9 answer
Not similar

23. Question 10
Determine the missing side of the similar figures.

24. Question 10 answer
10.5 inches

25. Question 11
The length of a rectangle is 22 centimeters and the width is 4 centimeters. A similar
rectangle has a width of 6 centimeters. What is the perimeter of the second rectangle?

26. Question 11 answer
78 centimeters

27. Question 12
In the figure, triangle ABC is similar to triangle DEC. Determine the distance from point D to point E.

28. Question 12 answer
90 yards

29. Question 13
A telephone pole casts a shadow that is 20 feet long. At the same time, a 5-foot-tall woman standing on a 1.5-foot-tall podium next to the telephone pole casts a shadow that is 15 feet long. How tall is the telephone pole?

30. Question 13 answer
8 and 2/3

31. Question 14

32. Question 14 answer J.

33. Question 15

34. Question 15 answer
B. is not true

35. Question 16

36. Question 16 answer D.

37. Question 17

38. Question 17 answer
J. similar

39. Question 18
How high is the ramp when it is 2 feet from the building?

40. Question 18 answer
12.5 or 1/8

41. Question 19

42. Question 19 answer
21.42 estimate

43. Question 20
Determine the coordinates of the vertices of each figure after a dilation with the given scale factor k.
S(–2, 1), U(0, 1), N(–1, –1); k = 4

44. Question 20 Answer
S’ (–8, 4), U’ (0, 4), N’ (–4, –4)

45. Question 21
Determine the coordinates of the vertices of each figure after a dilation with the given scale factor k.
M(–3, 1), A(1, 3), T(2, –2), H(–4, –2); k = 1 2

46. Question 21 answer
M’ (–1.5, ½ ), A’ ( ½ , 1.5), T’ (1, –1), H’ (–2, –1)

47. The End
Please stack your boards and place them in the center of your group
Pick up the journal, dry erase markers, and erasers