GEO 2 E-Learning 2/20

Write a rule to describe each transformation.

• dilation of 1.5 about the origin

• dilation of 2 about the origin

• dilation of 2.5 about the origin

• dilation of 5/2 about the origin

Write a rule to describe each transformation.

• rotation 180° about the origin

• dilation of 1/2 about the origin

• dilation of 0.25 about the origin

• dilation of 0.5 about the origin

Find the coordinates of the vertices of each figure after the given transformation. 3) dilation of 1/2 about the origin

• I'(2, -1), J'(-2, -2), K'(-1, 3)

• I'(-0.5, -1), J'(-1, 1), K'(1.5, 0.5)

• I'(-2, -3), J'(-3, 1), K'(2, 0)

• I'(-1.5, -3), J'(-3, 3), K'(4.5, 1.5)

Find the coordinates of the vertices of each figure after the given transformation. 4) dilation of 2 about the origin

• U'(-2.5, 0), V'(2.5, 5), W'(0, -5)

• U'(-1.5, 0), V'(1.5, 3), W'(0, -3)

• U'(-0.25, 0), V'(0.25, 0.5), W'(0, -0.5)

• U'(-2, 0), V'(2, 4), W'(0, -4)

State if the triangles in each pair are similar. If so, state how you know they are similar and complete the similarity statement. 5) ΔRQP ~ A) similar; AA similarity; ΔRDE B) similar; AA similarity; ΔEDR C) not similar D) similar; SAS similarity; ΔRED Answer: C) not similar

• similar; AA similarity; ΔRDE

• similar; AA similarity; ΔEDR

• not similar

• similar; SAS similarity; ΔRED

State if the triangles in each pair are similar. If so, state how you know they are similar and complete the similarity statement.

• similar; SSS similarity; ΔLSR

• similar; SSS similarity; ΔLRS

• not similar

• similar; SAS similarity; ΔLRS

State if the triangles in each pair are similar. If so, state how you know they are similar and complete the similarity statement.

• similar; AA similarity; ΔNTM

• similar; AA similarity; ΔTMN

• not similar

• similar; AA similarity; ΔMTN

State if the triangles in each pair are similar. If so, state how you know they are similar and complete the similarity statement.

• not similar

• similar; SAS similarity; ΔLDK

• similar; SSS similarity; ΔDKL

• similar; SAS similarity; ΔDKL

Find the missing length. The triangles in each pair are similar. 9) △NML ~ △NTU. What is the missing length?

• 17

• 14

• 35

• 24

Find the missing length. The triangles in each pair are similar. 10) △JKL ~ △JUT. What is the missing length?

• 4

• 3

• 7

• 5