1.which of the following statements proves that two tringles are similar?​

A.corresponding angles are congruent.
B.corresponding sides are proportional.
C.corresponding angles are congruent,and the corresponding sides are congruent.
D.corresponding angles are congruent,ang corresponding sides are proportional.

2.what triangle similarity theorem
states that if two angles of a triangle are congruent to the two angles of the second triangle respectively, then the two triangles are similar?

A.AA
B.ASA
C.SAS
D.SSS


3.which of the following ratios is proportion to 3:5?

A.9:15
B.12:20
C.6:18
D.9:12

4.what is the missing term in the proportion 6:8=3:x?

A.4
B.5
C.6
D.7