Question

when is a rhombus a rectangle?

a. when its sides are congruent
b. when its angles are convex angles
c. when its angles are right angles
d. when its sides are parallel

Explanation:

Analyze the definitions of a rhombus and a rectangle

A rhombus is a parallelogram with four congruent sides. A rectangle is a parallelogram with four right angles.

Determine the condition for a rhombus to be a rectangle

For a rhombus (which already has four congruent sides and parallel opposite sides) to also be classified as a rectangle, it must satisfy the defining property of a rectangle: having four right angles.

Answer:

• A. When its sides are congruent
• B. When its angles are convex angles
• C. When its angles are right angles (Correct answer)
• D. When its sides are parallel