Question

What is the sum of all the internal angles of a square?

• A. 180°
• B. 360°
• C. 270°
• D. 320°

Hint:

The internal angle sum of any quadrilateral is always \(360^\circ\), including squares and rectangles.

Answer 1

The Correct Option is B

Step 1: Understand polygon angle sum formula
For any polygon, the sum of internal angles is given by:
\[ \text{Sum} = (n - 2) \times 180^\circ \] where \( n \) = number of sides.

Step 2: Apply formula for square
A square has 4 sides, so: \[ \text{Sum} = (4 - 2) \times 180^\circ = 2 \times 180^\circ = 360^\circ \]

Step 3: Validate
A square has four equal angles of \(90^\circ\), and: \[ 90^\circ + 90^\circ + 90^\circ + 90^\circ = 360^\circ \] \[ \boxed{\text{Correct Answer: (B) 360°}} \]