Question

Image shows an isosceles triangle.

The perimeter of this isosceles triangle is 22 cm. If one side is 6 cm, what are the possible lengths of the other two sides?

Explain how you know. Provide at least one reason for your answer

Answer 1

Answer is
option 1 is 6, 6, and 10 cm
Option 2 is 6, 8 and 8 cm

An isosceles triangle has two sides that are congruent, and a third side not congruent.

Perimeter given is 22 cm.

Step-by-step explanation
Option 1, we have given side 6, so the other congruent side would also be 6. Your perimeter is 22. 22 - 6 - 6 = 10 for third side

Option 2, we have given side 6, so the other two sides will have to be congruent.
22 - 6 = 16. Divide 16 by 2 equal sides = 8 and 8 for the other two sides.