A quadrilateral is a four-sided polygon, and understanding its angles is crucial in geometry.
Quadrilaterals have four interior angles. Their sum is always 360 degrees.
Consider a rectangle. Each of its interior angles is 90 degrees. So, the sum of the interior angles is 90 + 90 + 90 + 90 = 360 degrees.
Quadrilaterals also have four exterior angles, which sum to 360 degrees.
Mastery of quadrilateral angles is essential for more advanced geometry concepts.
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