Dilations Similarity Practice

• (0, 0)

• (4, 1)

• (-5, 5)

• (1, 4)

Tags

CCSS.HSG.CO.A.2

Let triangle EFG be a mapped image, dilated about the origin, from triangle JKL with a scale factor k=4 with J(2,2), K(3,4), L(1,0). Which of the following are the coordinates for E?

• (12, 16)

• (8, 8)

• (4, 4)

• (4, 0)

Tags

CCSS.8.G.A.3

• (-3, 2)

• (-2, 3)

• (-0.5, 0.5)

• (-2, 0.5) (-0.5, 0.5)

• (-2, -1)

Tags

CCSS.8.G.A.3

Mr. Murphy designed a new logo for the NHS math team. Part of the logo includes a pair of similar triangles as shown in the figure below.

• The center of dilation for these triangles must be one of the vertices of the outside triangle.

• The center of dilation for these triangles must be one of the vertices of the inside triangle.

• The center of dilation for these triangles must be in the interior of the two triangles.

• The center of dilation for these triangles must be exterior to the two triangles.

Tags

CCSS.HSG.SRT.A.2

CCSS.8.G.A.4

Even though the size of the image changed, which statement below explains why this is NOT an example of a dilation? (NOT similar figures)

• the width increased in size, but the height did not change at all (they must change the same way)

• the width of the image got larger, not smaller

• this is a dilation actually, because the image increased 3 times the original size

• these are not a dilation, because the two images are congruent

Tags

CCSS.8.G.A.3

• x = 9

• x = 3.9

• x = - 0.26

• x = 9.95

Tags

CCSS.HSG.SRT.A.2

• x = -14

• x = -9

• x = -19.67

• x = 7

Tags

CCSS.HSG.SRT.A.2

Tags

CCSS.7.G.A.1

• 12 inches

• 24 inches  

• 6 inches

• The length of DE cannot be determined.

Tags

CCSS.8.G.A.3

If line segment AB is dilated about center P by a scale factor of ½ to form A’B’, which statement(s) is/are true? Choose all that apply.

• AB and A’B’ are parallel.

• A’B’ is twice as long as AB.

• The endpoints of A’B’ are ½ the distance to P as the endpoints of AB.

Tags

CCSS.8.G.A.3