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The measures of two angles of a triangle are 25° and 87°. Is the triangle acute, right, or obtuse? Explain.
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The measures of two angles of a triangle are 25° and 87°. Is the triangle acute, right, or obtuse? Explain.

User Eddie Kumar
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The triangle is acute because the angles 25 and 87 are less than 90 degrees.


User Whymatter
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180°- (25°+87°)= 180°-112°=68°
The triangle is acute because the measures of all angles of the triangle are less than 90°.
User Allan Engelhardt
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