Question

The perimeter of a triangle is 21 cm. Itwo of its sides are 7 cm each, what is the length of the third side? What type of triangle is this?

Answer 1

Answer: 7 cm on all sides, equilateral triangle

Step-by-step explanation: If two sides of the triangle are of length 7 cm and the perimeter is 21 cm, then the third side added to 7 +7 = 21

Which means third side = 21-7-7=7cm