FALSE
What is right-angled triangle?
The triangle whose one angle is 90° and the sum of the other two angle is 90° is called right-angle triangle.
From this above comcept it is clear that in right-angle triangle one angle is 90°.
The sum of other two angle is 90°.
i.e. α+β=90°
⇒α<90° and β<90°
⇒α and β is acute angle.
From above it clearly meantioned that in right-angle triangle there is both an acute angle and a right angle.
Therefor the asked statement is False.
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