Question

which triangle is equilateral?

Explanation:

Step1: Recall equilateral triangle definition

An equilateral triangle has all three sides equal and all angles equal (60°).

Step2: Analyze each triangle

• Top - left: Isosceles (two sides/angles seem equal, base different), not equilateral.
• Top - right: All sides appear equal, angles likely 60°, matches equilateral.
• Bottom - left: Right - angled (has a 90° angle), so not equilateral.
• Bottom - right: Scalene or isosceles (sides/angles not all equal), not equilateral.

Answer:

The triangle at the Top - Right (the one in the top - right box)