Which triangle has exactly two equal sides?

Which triangle has exactly two equal sides?

• A. Equilateral
• B. Isosceles
• C. Scalene
• D. Right

Answer: (B)

Triangles are categorized by side lengths. Exactly two equal sides means the triangle is isosceles. An equilateral triangle has all three sides equal, so it does not fit “exactly two.” A scalene triangle has no equal sides, so none are equal. A right triangle is defined by a 90-degree angle, and that angle property doesn’t determine how many sides are equal; you can have a right triangle that is scalene or isosceles, but the statement about exactly two equal sides points to isosceles.

Triangles are categorized by side lengths. Exactly two equal sides means the triangle is isosceles. An equilateral triangle has all three sides equal, so it does not fit “exactly two.” A scalene triangle has no equal sides, so none are equal. A right triangle is defined by a 90-degree angle, and that angle property doesn’t determine how many sides are equal; you can have a right triangle that is scalene or isosceles, but the statement about exactly two equal sides points to isosceles.