Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
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Rectangle perimeter is 2(length + width).
Thus, 2(8 + 5) = 26 cm.
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For a triangle, the sum of any two sides must exceed the third.
Here 4 + 7 = 11, which is less than 12.
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Vertically opposite angles are equal.
Therefore, the opposite angle is 72°.
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Supplementary angles sum to 180°.
Thus, 180° - 125° = 55°.
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Complementary angles sum to 90°.
Thus, 90° - 38° = 52°.
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Alternate interior angles formed by parallel lines are equal.
Thus, the matching angle is 65°.
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Corresponding angles between parallel lines are equal.
Therefore, the other angle is also 110°.
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A tangent to a circle is perpendicular to the radius drawn to the contact point.
The angle between them is 90°.
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One complete revolution corresponds to 360 degrees.
Therefore, the central angle of a full circle is 360°.
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The diameter is twice the radius.
Thus, 2 × 7 = 14 cm.
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An angle subtended by a diameter at the circumference is a right angle.
This result is known as Thales' theorem.
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The number of diagonals is n(n - 3)/2.
For n = 6, this gives 6 × 3 ÷ 2 = 9.
