 QUIZ
Dilations and Similar Triangles
a day ago by
Renee Garcia
Save
Copy and Edit
INSTRUCTOR-LED SESSION
Start a live quiz
ASYNCHRONOUS LEARNING
Assign homework 15 questions
Preview
• Question 1
30 seconds
Report an issue
Q. A dilation always produces a similar figure. Similar figures have the same ______ but different ______.
measure; shapes
sizes; shapes
value; measures
shape; sizes
• Question 2
30 seconds
Report an issue
Q.

Which must be true of a scale factor of a dilation if the image is smaller that the pre-image?

The scale factor is positive

The scale factor is greater than 1

The scale factor is between 0 and 1

The scale factor is negative

• Question 3
30 seconds
Report an issue
Q. How does a dilation change the angles of a polygon?
It changes by the scale factor.
Dilations do not change the angles.
It is impossible to answer this question.  The angles change unpredictably.
The angles all change to larger angles.
• Question 4
30 seconds
Report an issue
Q. State 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)
• Question 5
60 seconds
Report an issue Q. Choose the correct scale factor:
2
3
1/3
1/2
• Question 6
60 seconds
Report an issue Q.

Figure D´E´F´G´ is a dilation with center (0, 0) of figure DEFG. What is the scale factor?

four
alternatives
4
• Question 7
120 seconds
Report an issue Q.

Rectangle ABCD is dilated by a scale factor of 1/2 with the center at B. What are the coordinates of point D?

(6,4)

(3,2)

(4,7)

(12,8)

• Question 8
30 seconds
Report an issue Q.

Determine whether the triangles are similar by AA~, SSS~, SAS~, or not similar.

AA

SSS

SAS

Not similar

• Question 9
30 seconds
Report an issue Q.

Determine whether the triangles are similar by AA~, SSS~, SAS~, or not similar.

AA

SSS

SAS

no similar

• Question 10
30 seconds
Report an issue Q.

Determine whether the triangles are similar by AA~, SSS~, SAS~, or not similar.

SSS

AA

SAS

not similar

• Question 11
30 seconds
Report an issue Q.

Are the triangles similar?

Yes

No

• Question 12
120 seconds
Report an issue Q. To find the height of a very tall pine tree, you place a mirror on the ground and stand where you can see the top of the pine tree.  How tall is the tree?
144 feet
72 feet
36 feet
• Question 13
120 seconds
Report an issue Q.

Rajesh is making pennants in preparation for a school soccer game. He wants the pennants to be similar triangles. Which of these triangles could he use for the pennants?

QRS and TVW

QRS and XYZ

TVW and JKL

TVW and XYZ

• Question 14
120 seconds
Report an issue Q.

Find the value of x, and use it to find KM.

x = 10, KM = 25

x = 11, KM = 28

x = 13.3 KM = 34.9

x = 4.3, KM = 8

• Question 15
120 seconds
Report an issue Q. Find side length X. 