
4.6 Similarity and Transformations
Presentation
•
Mathematics
•
10th Grade
•
Easy
+4
Standards-aligned
Larry Cooper
Used 13+ times
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12 Slides • 12 Questions
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4.6 Similarity Transformations
"Mathematics is the music of reason"
-James Joseph Sylvester
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Multiple Choice
Which choice correctly describes similar figures?
Same shape and same size
Same shape but not necessarily the same size.
Same size but not necessarily the same shape.
None of the above
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Multiple Choice
Find the image of the Δ with vertices P(−1,5), Q(−4,3), R(−2,1) after the similarity transformation:
Rotation 180 degrees about the origin AND Dilation: (x,y)→(2x,2y) (NOT ON THE PACKET)
P′′(−10,1), Q′′(−6, 8), R′′(−2, 4)
P′′(5,−1), Q′′(3,−4), R′′(1,−2)
P′′(1,−5), Q′′(4,−3), R′′(2,−1)
P′′(2,−10), Q′′(8,−6), R′′(4,−2)
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Multiple Choice
Which similarity transformation maps ABCD to A'B'C'D'? #11
A 180° rotation followed by a dilation with scale factor 3
A reflection in the x-axis followed by a dilation with scale factor 3.
A 31 rotation followed by a dilation with scale factor
A reflection in the x-axis followed by a dilation with scale factor 31
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Multiple Choice
Which similarity transformation maps WXYZ to W'X'Y'Z'? #12
Reflection over the x-axis, followed by a dilation with a scale factor of 2
Reflection over the y-axis, followed by a dilation with a scale factor of 2
Reflection over the y-axis, followed by a dilation with a scale factor of 21
Reflection over the x-axis, followed by a dilation with a scale factor of 21
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Multiple Choice
Quadrilateral OBCD is similar to Quadrilateral OHTE because? #8
Quad OBCD can be reflected over the x axis and then rotated 90 degrees
Quad OBCD can be reflected over the x-axis and then dilated about point O by a scale factor of 2.
Quad OBCD can be reflected over the y-axis and then dilated about the origin by a scale factor of 2.
Quad OBCD can be reflected over the y-axis and then dilated about the origin by a scale factor of 1/2.
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Multiple Choice
ΔOBC is similar to ΔOGT because: (choose the best answer) #9
ΔOBC can be dilated about point O by a scale factor of 1/2, and then rotated 90 degrees about the origin
ΔOBC can be dilated about point G by a scale factor of 1/2, and then reflected over the x- axis
They aren't similar
They map to each other with similarity transformations.
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Multiple Select
Select ALL sequences of transformations that would show that
ΔABC and ΔAED are similar. The length of AC is 6 units. #17
Dilate triangle ABC using center A by a scale factor of 1/2, then reflect over line AC
Dilate triangle AED using center A by scale factor if 2, then reflect over line AC
Reflect triangle ABC over line AC, then dilate using center A by a scale factor of 1/2
Reflect triangle AED over line AC, then dilate using center A by a scale factor of 2
Translate triangle AED by directed line segment DC, then dilate using center C by scale factor 2
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Multiple Choice
Triangle ABC was dilated and translated to form a similar triangle A'B'C'. #18
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Multiple Choice
Choose the statement that accurately describes the relationship between ABCD and EFGH. #20
ABCD and EFGH are congruent, but not similar.
ABCD and EFGH are similar, but not congruent.
ABCD and EFGH are both congruent and similar.
ABCD and EFGH are neither congruent, nor similar.
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Multiple Choice
Triangle ABC with Vertices A(-1, 2), B(-1, -2), and C(-4, -2) is dilated by a scale factor of 2 to form triangle A’B’C’. #24
What is the length in units, of side A’B’?
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Multiple Choice
Are the following similar? Why or why not? #27
Yes, they are both trapezoids
No, they have different sizes
No, the ratios of the corresponding sides are not equal.
Yes, they have the same base and 4 angles
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Multiple Choice
What is the scale factor from MNOP to ABCD? #30
2/3
1/2
3/2
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4.6 Similarity Transformations
"Mathematics is the music of reason"
-James Joseph Sylvester
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