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- 1. Multiple Choice
Which of the following is NOT preserved by a size change?
angle measure
betweenness
collinearity
distance
- 2. Multiple Choice
If the triangles are similar, what is the value of X?
x = 2
x = 3
x = 6
x = 7
- 3. Multiple ChoiceAll corresponding angles are congruent in similar figures.TrueFalse
- 4. Multiple Choice
All corresponding sides are congruent in similar figures.
True
False
- 5. Multiple Choice
The pair of figures are similar. Find the missing side.
x = 9
x = 28
x = 63
x = 7
- 6. Multiple Choice
Two spheres have a ratio of similitude of 1/3. The smaller sphere has a surface area of 16 ft2. Find the surface area of the larger sphere.
48 ft2
144 ft2
432 ft2
32 ft2
- 7. Multiple Choice
Rectangle A has an area of 20 cm and Rectangle B has an area of 180. The two rectangles are similar. What is the ratio of similitude(k)?
9
3
2
1/2
- 8. Multiple Choice
Suppose AB = 4. After a dilation, A'B' = 10. What is the magnitude (ratio of similitude) for the dilation?
5/2
10
4
2/5
- 9. Multiple Choice
The points X = (-3, 10) and Y = (2, -9) are transformed by S3. Find the coordinates of their images.
X' = (-6, 20) and Y' = (6, -27)
X' = (-9, 30) and Y' = (6, -27)
X' = (-9, 30) and Y' = (4, -18)
X' = (-6, 20) and Y' = (4, -18)
- 10. Multiple Choice
Two triangles are similar. One has a height of 14 in and the other has a height of 6 in. The larger triangle has an area of 56 in2. Find the area of the smaller triangle.
10.29 in2
304.89 in2
24 in2
130.67 in2
- 11. Multiple Choice
Two cylinders have a ratio of similitude of 2/5. Find the ratio of their volumes.
2:5
8:125
4:25
1:1
- 12. Multiple Choice
A photo measures 3" x 5". It is enlarged so that the larger dimension becomes 16". Find the new shorter dimension.
44.4"
5.8"
26.7"
9.6"
- 13. Multiple ChoiceWhich of the following is NOT true about similar figures?A) Similar figures always have the same shape.B) Similar figures always have the same size.C) Similar figures always have corresponding angles that are equal.D) Similar figures always have corresponding sides that are proportional.
- 14. Multiple ChoiceChoose the similarity statement for the triangles.ΔMNL ∼ ΔOPQΔNOM ∼ ΔPQLΔLMN ∼ ΔPQOΔMLN ∼ ΔPQO
- 15. Multiple Choice
If the scale factor(magnitude) is greater than one, the new figure will be
a reduction
an enlargement
a scale
not proportional
- 16. Multiple Choice
If the scale factor(magnitude) is less than one, the new figure will be
an enlargement
a reduction
a scale factor
- 17. Multiple Choice
What is the magnitude (scale factor) from MNOP to ABCD?
2/3
3/2
2
3
- 18. Multiple ChoiceThe pair of figures is similar. Find the missing side.x = 12x = 3x = 40x = 4
- 19. Multiple Choice
Find missing side given the similar figures.
1/5
5
7
1/7
- 20. Multiple ChoiceWhen you dilate a figure you...slide it.turn it.flip it.make it larger or smaller.
- 21. Multiple ChoiceA transformation that changes the size of a figure, but not the shape. (Hint: Not rigid motion)translationrotationreflectiondilation
- 22. Multiple ChoiceState the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.(5,3)(20,12)(-20,-12)(-5,-3)
- 23. Multiple ChoiceDefinition: The figure before a transformation has occurred.Pre-imageImageTranslationReflection
- 24. Multiple ChoiceDefinition: The figure after a transformation has occurred.Pre-imageImageTranslationReflection
- 25. Multiple ChoiceA triangle has vertices with coordinates (2,0), (3, -1) and (-2,-5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image?(5,3), (6,2), (1,-2)(6,0), (9,-3), (-6,-15)(2/3,0), (1,-1/3), (-2/3,-5/3)(-1,-3), (0,-4), (-5,-8)
- 26. Multiple Choice
A figure has a vertices W(-2,4), and X(1,4. Find the coordinates of the figure after a dilation with a magnitude 2.
W(-4,83), X(2,8)
W(-4,8), X(2,8)
- 27. Multiple ChoiceTriangle ABC will be dilated by a scale factor of 1/2. What will be the coordinates of C'?(-1, -2.5)(12, 6)(3, -1.5)(0, 1.5)
- 28. Multiple Choice
Enlargement or reduction? Find the magnitude (ratio of similitude)!
It's a reduction; the scale factor is 2.
It's an enlargement; the scale factor is 2.
It's an enlargement; the scale factor is 1/2.
It's a reduction; the scale factor is 1/2.
- 29. Multiple ChoiceEnlargement or reduction? Find the scale factor!It's an enlargement; the scale factor is 1/2.It's an enlargement; the scale factor is 2.It's a reduction; the scale factor is 1/2.It's a reduction; the scale factor is 2.
- 30. Multiple ChoicePolygon ABCDE will be dilated by a scale factor of 2. Which statement is NOT true of the dilation?The corresponding angles of the two polygons will be equal.The dilation will be an enlargement.The original and the image will be congruent.Polygon A'B'C'D'E' will be proportional to polygon ABCDE.
- 31. Multiple ChoiceThe original photo has side lengths of 5 inches and 6 inches. He is wanting to dilate the picture by a scale factor of 2. How many total inches of wood will he need to create a frame for the new enlarged photo?224488121
- 32. Multiple Choice
Then Henry Ford Museum is Dearborn, Michigan hosts a theater with one of the world's largest screens, which is 60 ft by 84 ft. If a classroom projection screen were changed to be in direct proportion with the screen at the Henry Form Museum, the dimensions woudl be 5 ft X _____ft.
3.6 feet
29 feet
12 feet
7 feet
- 33. Multiple Choice
If the ratio of sides is 4:7, then the ratio of perimeters is...
4:7
8:14
16:49
64:343
- 34. Multiple Choice
If the magnitude of the size transformation is 5/6, then the ratio of areas is...
5:6
10:12
25:36
125:216
- 35. Multiple ChoiceFind x10.558.56
- 36. Multiple ChoiceAn NBA basketball court (rectangle) is similar to an elementary school basketball court. The sideline of the NBA court is 94 feet, and the sideline of the elementary court is 84.6 feet. The NBA court has an area of 4700 square feet. Find the area of the elementary court.4700 square feet5,802 square feet5,222 square feet3807 square feet
- 37. Multiple ChoiceTwo slices of Dan’s Famous Pizza have 230
Calories. How many Calories would you expect to be in 5 slices of the same pizza?2.5 calories575 calories250 calories460 calories - 38. Multiple Choice
Hamburger meat sells for $6 for every 3 pounds. If Lily buys 10 pounds of hamburger meat, how much will she pay?
$30
$20
$60
$10
- Answer choicesTagsAnswer choicesTags