What is the sum of the interior angles in a quadrilateral?

What is the sum of the interior angles in a

Multiple choice — select the best answer

A270 degrees
B540 degrees
C360 degrees
D180 degrees

✓ Correct answer: C. 360 degrees To find the sum of the interior angles of a polygon, use the formula $$\text{Sum of angles} = (n - 2) \times 180^\circ$$, where $$n$$ is the number of sides. For a quadrilateral, $$n = 4$$, so $$\text{Sum of angles} = (4 - 2) \times 180^\circ = 360^\circ$$. This means the angles of any quadrilateral (such as square, rectangle, trapezius) add up to 360 degrees.

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