Question

How would you describe the angles and sides of an acute, isosceles triangle?

Answer 1

An isosceles must have `2` equal side lengths and `2` equal angles only.

Explanation:

An isosceles triangle looks something like:

• Any isosceles triangle has two equal sides, which are both indicated by the variable `b`. This means that the left side's length `b` is equal to the right side's length `b`.
• Any isosceles triangle also has two equal angles, which are both indicated by the line at each angle.

With this information, we can state that for a triangle to be isosceles, it must have `2` equal side lengths and `2` equal angles.

If `b` was not equal to `b`, then the triangle is not isosceles. Similarly, if the angles were not equal to each other, the triangle is not isosceles.