Plane Geometry and Similarity Review

Solve for the variable.

• 133

• 90

• 47

• 63

Solve for the variable.

• 55

• 80

• 265

• 360

In the diagram, DC is the perpendicular bisector of AB and CE is the angle bisector of

• 90

• 45

• 30

• 15

Find the measure of ∠ACD. 

• 130

• 115

• 65

• 50

Which of the following transformations carry this regular polygon onto itself?

• Reflection across line l

• Rotation of 45° counterclockwise

• Rotation of 60° counterclockwise

• Rotation of 72° counterclockwise

Which transformation maps ∆ HEN  to ∆ H'E'N' ?

• R_C,180(r_AB )

• r_AB(T_XY)

• R_C,180

• r_AB

Which item below is NOT a key property of a dilation relative to its original figure?

• Corresponding angles are equal in measurement

• The sides of the image are parallel or correspond with the preimage

• Figure may be stretched vertically but not horizontally

• Corresponding lengths are proportional in measurement

Which Scale Factor below results in an image SMALLER than the original figure?

• r ‹ 0   
  

• 0 ‹ r ‹ 1

• r = 1   

• r › 1

How does the location of the image compare to the location of the pre-image after a dilation about point O, by a scale factor of  r=1/4 ?

• the image will be farther away from point O

• the image and pre-image will be equal distances from point O

• the image will be closer to point O

• the pre-image will be closer to point O

Determine if the two triangles are congruent. If they are congruent, choose the best method for proving congruence.

• ASA

• Not Congruent

• SSS

• SAS