Answer: A - A triangle that has one angle that is 90° is a right triangle. A right triangle has one right angle and two acute (>90°) angles. The sum of the three angles of any triangle must always add up to 180°.

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SSAT Secondary School Admission Test

Category - Mathematics

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What kind of triangle has one angle that is 90°?

A right triangle
An acute triangle
An obtuse triangle
A scalene triangle

Explanation

Answer: A - A triangle that has one angle that is 90° is a right triangle. A right triangle has one right angle and two acute (>90°) angles. The sum of the three angles of any triangle must always add up to 180°.

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