If two angles of a triangle are complementary (sum = 90°), what type of triangle is it?

Type: MCQ • Marks: 1

A. Acute-angled triangle

B. Obtuse-angled triangle

C. Equilateral triangle

D. Right-angled triangle

Explanation

Since two angles add to 90°, the third angle must be 180° - 90° = 90° (Right-angled).

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Class 7th Ganita Prakash 1

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