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Does a right angle have a 90 angle?
A right-angle is a 90 degree angleA right triangle has one, and a 90-degree angle isone.
Why do they call a triangle a right triangle?
right angle=90 degrees and a right triangle has one side of it that forms a 90 degree angle...as for the naming "right" don't know but it refers to 90 degree angle
Is an obtuse triangle a right triangle?
its a triangle * * * * * No, it an obtuse triangle is not a right angle triangle. An obtuse angled triangle has one angle which is greater than 90 degrees and the other two are acute. In a right angled triangle, the largest angle is 90 degrees while the other two are acute. So one cannot be the other.
How do you determine if a triangle is a right angle?
If one of the angles in a triangle is exactly 90 degrees, then it is a right-angle triangle.
Why not left angle triangle but right angle triangle?
Because the phrase 'right angle' indicates 90 degrees whereas there is no such angle as a 'left angle'
