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Open Up - Grade 8 - Mathematics - Unit 2 - Lesson 5
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Last updated 11 months ago
8 questions
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Question 1
1.
Quadrilateral
ABCD
is dilated with center
(0,0)
, taking
B
to
B
1
.
Draw
A
1
B
1
C
1
D
1
.
visibility
View drawing
Question 2
2.
Triangles
B
and
C
have been built by dilating Triangle
A
.
Find the center of dilation.
(Show your work)
Triangle
B
is a dilation of
A
with approximately what scale factor?
(Short Answer)
visibility
View drawing
Question 3
3.
Triangles
B
and
C
have been built by dilating Triangle
A
.
Triangle
A
is a dilation of
B
with approximately what scale factor?
(Short Answer)
Question 4
4.
Triangles
B
and
C
have been built by dilating Triangle
A
.
Triangle
B
is a dilation of
C
with approximately what scale factor?
(Short Answer)
Question 5
5.
Here is a triangle.
Draw the dilation of triangle
ABC
, with center (0,0), and scale factor 2. Label this triangle
A
1
B
1
C
1
.
visibility
View drawing
Question 6
6.
Here is a triangle.
Draw the dilation of triangle
ABC
, with center
(0,0)
, and scale factor \frac{1}{2}. Label this triangle
A
11
B
11
C
11
.
visibility
View drawing
Question 7
7.
Here is a triangle.
Is A
11
B
11
C
11
a dilation of triangle
A
1
B
1
C
1
?
Yes,
A
11
B
11
C
11
is a dilation of
A
1
B
1
C
1
.
No,
A
11
B
11
C
11
is not a dilation of
A
1
B
1
C
1
.
Question 8
8.
Triangle
ABC
is a right triangle, and the measure of angle
A
is 28
o
.
What are the measures of the other two angles?
90
72
100
80
62
52
"Source: Open Up Resouces (Download for free at openupresources.org.)"