Geometry – Dilations- Unit 3 Worksheet #3
Name____________________________________
Targets: I can dilate a figure on the coordinate plane using a scale factor that is an integer or a fraction
less than one.
1. Dilate ΔABC from center point A using a
scale factor of 2.
2. Dilate ΔDEF from center point E using a
scale factor of 3.
3. Dilate ΔABC from center point G using a
scale factor of ½.
4. Dilate ΔDEF from center point H using a
scale factor of 1/3.
5. Plot this triangle and then dilate it by a scale factor of 2 from the center at O. State the coordinates
of the image of ABC. A(1,7), B(4,9), C(4,6)
6. ΔOAB has been dilated to form ΔOA’B’. Answer the following questions about the transformation.
a. What is the scale factor of the dilation?
b. What is true about the slope of ̅̅̅̅
̅̅̅̅̅̅
c. What does this mean about the relationship
̅̅̅̅̅̅
between ̅̅̅̅
d. What is true about the measure of AB compared
to A’B’?
e. What kind of angles (special name) are OAB and
OA’B’?
f.
What should be true about mOAB and mOA’B’?
EXTRA CREDIT: If you can figure this problem out, I’ll add 3 points to your previous test score.
7. Dilate figure ORMAL from center point N using a scale factor of -2.