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प्रश्न
If three angles of a quadrilateral are equal to 90° each, then the quadrilateral is a ______.
विकल्प
rectangle
square
parallelogram
rhombus
MCQ
रिक्त स्थान भरें
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उत्तर
If three angles of a quadrilateral are equal to 90° each, then the quadrilateral is a rectangle.
Explanation:
The sum of all four interior angles of a quadrilateral is 360°. Since three of the angles measure 90° each, the fourth angle is 360° − (90° + 90° + 90°) = 360° − 270° = 90°. Because all four interior angles are right angles (90°), the quadrilateral is a rectangle.
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