Quiz about Understand Similar Figures

Question 1

All corresponding sides are proportional in similar figures.

Accepted Answer

True

Answer

False

Question 2

All corresponding angles are congruent in similar figures.

Accepted Answer

True

Answer

False

Question 3

All corresponding sides are congruent in any similar figure.

Accepted Answer

False

Answer

True

Question 4

The triangles are similar.  Find x

Accepted Answer

30

Answer

90

Answer

60

Answer

15

Question 5

Two objects that are the same shape but not the same size are _______.

Accepted Answer

Similar

Answer

Congruent

Answer

Vertical

Answer

Complementary

Question 6

Question 6.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 7

A triangle is dilated by a scale factor of 2. If the original area was 24, what will be the new area?

Accepted Answer

96

Answer

24

Answer

2

Answer

48

Question 8

The area of a triangle is 20 square units. If the triangle is dilated by a scale factor of 2, which statement is true?

Accepted Answer

The area of the new triangle will be 4 times the area of the new triangle.

Answer

The area of the new triangle will be 2 times the area of the old triangle.

Answer

The area of the new triangle will be 3 times the area of the old triangle.

Answer

The two triangles will have the same area.

Question 9

A square is dilated by a scale factor of 4.3. Which statement is true?

Accepted Answer

The perimeter of the new square will be 4.3 times the perimeter of the old square.

Answer

The perimeter of the new square will be 8.6 times the perimeter of the old square.

Answer

The perimeter of the new square will be 3 times the perimeter of the old square.

Answer

The perimeter of the new square will be 18.49 times the perimeter of the old square.

Question 10

If a shape is dilated, how do you find the new perimeter?

Accepted Answer

You multiply the old perimeter by the scale factor used in the dilation.

Answer

You square the scale factor used in the dilation. Then multiply the old perimeter by the squared scale factor.

Question 11

If a shape is dilated, how do you find the new area?

Accepted Answer

You square the scale factor used in the dilation. Then multiply the old area by the squared scale factor.

Answer

You multiply the old area by the scale factor used in the dilation.

Question 12

The two figures are similar. Which proportion must be true?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 13

Which rule shows the transformation?

Accepted Answer

(x, y) -----> (2x, 2y)

Answer

(x, y) ----> (0.5x, 0.5y)

Answer

(x, y) ----> ( 2 + x, 2 + y)

Answer

(x, y) -----> (3x, 3y)

Question 14

Question 14.

Accepted Answer

H

Answer

F

Answer

G

Answer

J

Question 15

Question 15.

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 16

The black triangle has been dilated by a scale factor of 1/4, which triangle the new triangle(prime)?

Accepted Answer

green triangle

Answer

red triangle

Answer

black triangle

Answer

none of these

Question 17

The black triangle has been dilated by a scale factor of 2, which triangle is the new triangle(prime)?

Accepted Answer

red triangle

Answer

green triangle

Answer

black triangle

Answer

none of these

Question 18

A 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 new triangle?

Accepted Answer

(6,0), (9,-3), (-6,-15)

Answer

(5,3), (6,2), (1,-2)

Answer

(2/3,0), (1,-1/3), (-2/3,-5/3)

Answer

(-1,-3), (0,-4), (-5,-8)

Question 19

In a dilation what mathematical operation is used with the scale factor?

Accepted Answer

multiplication

Answer

addition

Answer

subtraction

Answer

division

Question 20

Question 20.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 21

Question 21.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 22

A figure has a perimeter of 40 units and an area of 100 units². Which of the following describes the new perimeter and area after the figure is dilated by a scale factor of 1/2?

Accepted Answer

Perimeter: 20 units Area: 25 units²

Answer

Perimeter: 20 units Area: 50 units²

Answer

Perimeter: 10 units Area: 25 units²

Answer

Perimeter: 80 units Area: 200 units²

Question 23

Question 23.

Accepted Answer

(x,y) became (2x,2y)

Answer

(x,y) became (1/2x,1/2y)

Answer

(x,y) became (x,2y)

Answer

(x,y) became (2x,y)

Question 24

Question 24.

Accepted Answer

All the corresponding sides are proportional, with a scale factor of 1/3.

Answer

All the corresponding angles will increase by a multiple of 3.

Answer

All the corresponding sides are proportional, with a scale factor of 3.

Answer

All the corresponding angles will decrease by a multiple of 1/3.

Question 25

Rectangle MNPO and ABCD are similar. Which of the following porpotions could be used to check to see if the rectangles are similar?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

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