Question

Two sides of an isosceles triangle measure 6 and 10. The perimeter of the triangle could be

A. 26 or 21
B. 12 or 20
C. 22 or 23
D. 26 or 22

Answer 1

If a triangle is isosceles, then two of the sides must be the same length.

Therefore, the sides can be either:
6+6+10= 22
6+10+10=26

Final answer: D