Question

Which of the following shapes always have a right angle?

• A. Right triangle, square, and trapezoid
• B. All the given shapes.
• C. Right triangle, trapezoid, and rectangle
• D. Rectangle, right triangle, and square

Answer 1

The correct option is D Rectangle, right triangle, and square

Label the given triangle as A, B, and C.


We, can see the triangle forms a right angle along ABC, i.e., ∟ABC = 90°
Number of perpendicular sides = 1

Trapezoid:
A trapezoid may or may not have right angles.

Rectangle and square:
All angles of a square and a rectangle are right angles.
Number of perpendicular sides = 4

Therefore, of the given shapes, the rectangle, the right triangle, and the square always have a right angle.