Question

How many degrees are there in a right angle?

• A. 90°
• B. 45°
• C. 60°
• D. 120°

Hint:

A right angle is always 90°, forming the basis for perpendicular lines and shapes like squares and rectangles.

Answer 1

The Correct Option is A

Defining a right angle
Step 1: A right angle is an angle that measures exactly 90 degrees.
Confirming the measure
Step 2: By definition, a right angle is one
-quarter of a full circle (360°), so \( \frac{360°}{4} = 90° \).
Evaluating options
Step 3: Analyze the options:
- (A) 90°: Correct, as a right angle is 90°.
- (B) 45°: Incorrect, as 45° is half a right angle.
- (C) 60°: Incorrect, typical for equilateral triangle angles.
- (D) 120°: Incorrect, too large.
Thus, the correct answer is (A).