Acute angle in the range (0, pi/2) radians = (0, 90) degrees.Right angle = pi/2 radians = 90 degrees.
Obtuse angle in the range (pi/2, pi) radians = (90, 180) degrees.
Straight angle = pi radians = 180 degrees.
Reflex angle in the range (pi, 2*pi) radians = (180, 360) degrees.
Full turn = 2*pi radians = 360 degrees.
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the three kinds of variables are independent,dependent and controlled
Each angle of a rectangle is a right angle. (90°)
Each interior angle is 140 degrees. Each exterior angle is 220 degrees.
It is a square or a rectangle where each interior angle is a right angle of 90 degrees.
Yes normally, unless it is a right angle isosceles triangle which will have angles of 90, 45 and 45 degrees.