SAT Math Practice Question #26753 - SATify | SATify

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SAT Math Practice Question #26753 - SATify | SATify

#26753

number theory

geometry

Relative Motion

hard

120 sec

How many different isosceles triangles have integer side lengths and perimeter $21$ ?

A.

4

B.

5

C.

6

D.

7

E.

8