Angles are measured in degrees, not sides.
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Right triangle. Two angles are 45 degrees, and the third angle is 90 degrees. Two sides are equal.
It has 3 sides and 3 interior angles that add up to 180 degrees It has 2 equal sides: It has 2 equal 45 degree angles It has one right angle of 90 degrees
No because an equilateral triangles has 3 equal sides and 3 equal angles of 60 degrees. But there is such a thing as an isosceles right angle triangle which has 2 equal sides and a 90 degree angle with two equal angles of 45 degrees.
There are infinitely many types of triangles, and they can be classified according to their angles or sides (or both). Equilateral (equiangular triangles): All sides equal, all angles 60 degrees. Obtuse angled isosceles triangles: Two sides equal; one angle > 90deg. Right angled isosceles triangles: Two sides equal; angles of 90, 45, 45 degrees. Other isosceles triangle: Two sides equal; angles of 180-2x, x, x degrees. Obtuse angled scalene triangles: All sides unequal, one angle > 90 degrees. Right angled scalene triangles: All sides unequal, one angle = 90 degrees. Acute angled scalene triangles: All sides unequal, all angles < 90 degrees.
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