Mathematics for IGCSE & O level - Angles (Section 1 - No. 25) | ExamPlay

Mathematics for IGCSE & O level - Angles (Section 1 - No. 25)

What type of triangle has all angles less than 90 degrees?

Obtuse

Acute

Right

Scalene

Giải thích

An acute triangle has all angles less than 90°

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