Geometry Triangles Mixed Review

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

• ASA

• Not Congruent

• SSS

• SAS

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

• SAS

• SSS

• ASA

• AAS

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

If  ABC ~  DEF and  DEF ~  GHI, then ______.

• AB = GH 

• ABC ~ GHI

• ACB~GHI

• BCA~GHI

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

• R_C,180(r_AB )

• r_AB(T_XY)

• R_C,180

• r_AB

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

• r ‹ 0   
  

• 0 ‹ r ‹ 1

• r = 1   

• r › 1

Apply a dilation with a scale factor of ½ to triangle ABC. Let the image be triangle A’B’C’. Which one of the following equations is true?

• A’B’ = ½ (AB)

• AB = ½ (A’B’)

• m∠A’ = ½ (m∠A)

• m∠A = ½ (m∠A’)

Choose the letter that represents the missing length in the figure

• 12

• 10

• 7

• 6

Find the length of segment EC to one decimal place.

• .5

• .2

• 19

• 22.9