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Open Up - Grade 8 - Mathematics - Unit 2 - Lesson 3

By Formative Library
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Last updated over 2 years ago
10 Questions
1
1.
Segment AB measures 3 cm. Point O is the center of dilation. How long is the image of AB after a dilation with . . .
Scale factor 5?
1
2.
Segment AB measures 3 cm. Point O is the center of dilation. How long is the image of AB after a dilation with . . .
Scale factor 3.7
1
3.
Segment AB measures 3 cm. Point O is the center of dilation. How long is the image of AB after a dilation with . . .
Scale factor \frac{1}{5}?
1
4.
Segment AB measures 3 cm. Point O is the center of dilation. How long is the image of AB after a dilation with . . .
Scale factor s?
1
5.
Here are points A and B. Plot the points for each dilation described.

C is the image of B using A as the center of dilation and a scale factor of 2.

D is the image of A using B as the center of dilation and a scale factor of 2.
E is the image of B using A as the center of dilation and a scale factor of \frac{1}{2}.
F is the image of A using B as the center of dilation and a scale factor of \frac{1}{2}.
1
6.
Make a perspective drawing.

Include in your work the center of dilation, the shape you dilate, and the scale factor you use.
1
7.
Triangle ABC is a scaled copy of triangle DEF. Side AB measures 12 cm and is the longest side of ABC. Side DE measures 8 cm and is the longest side of DEF.

Triangle ABC is a scaled copy of triangle DEF with what scale factor?(Leave your answer as a fraction.)
1
8.
Triangle ABC is a scaled copy of triangle DEF. Side AB measures 12 cm and is the longest side of ABC. Side DE measures 8 cm and is the longest side of DEF.

Triangle DEF is a scaled copy of triangle ABC with what scale factor?(Leave your answer as a fraction.)
1
9.
The diagram shows two intersecting lines.
Find the missing angle measures.(One Measurement per answer)
  • 78
  • 58
  • 82
  • 98
  • 102
  • 52
  • Angle A
  • Angle B
  • Angle C
1
10.
Find the side lengths of DEF and the angle measures of ABC.
(Mark your answers on the table below.)
"Source: Open Up Resouces (Download for free at openupresources.org.)"