It has 2 right angles that measure up to 90 degrees
Improved Answer:-
It has 3 sides.
It has 3 interior angles that add up to 180 degrees and 1 of its angles is a right angle and the other 2 angles are acute.
It can be used in conjunction with Pythagoras; theorem to find the lengths of its sides.
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An acute angled triangle, right angled triangle or obtuse angled triangle.
a scalene can be a right-angled triangle or a obtuse angled triangle or a acute angled triangle depending on the angles of the triangle.
acute angled triangle,right angled triangle,obtuse angled triangle,isosceles triangle,equilateral triangle, scalene triangle
a right angled triangle is special because it is the only triangle that has a right angle with a dregree of 180.
The right-angled triangle.