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Construct a 135-degree angle by first constructing a 90-degree angle. Construct an angle bisector for one side of the right angle. The angle addition theorem allows addition of the resulting 90-degree and 45-degree angles to create the required angle. The construction t...


A 90-degree angle has an internal angle equivalent to 90 degrees and forms a perfect L shape. It is also known as a right angle.


A right angle has 90 degrees. Angles are measured on a scale from 0 to 360 degrees. Right angles represent one-fourth of a full 360-degree revolution.


A 360 degree angle is called a full circle. Angles can be measured from zero degrees all the way to 360 degrees because 360 degrees is one full rotation.


A 180-degree angle is called a straight angle. Angles that are exactly 90 degrees are called right angles, while those that are between 0 and 90 degrees are called acute. Angles that are between 90 and 180 degrees are considered obtuse.


A zero degree angle appears as a straight line that travels from the point of inception to the right or positive side of a number line. If the line travels both left and right from the point of inception, it is considered a 180 degree angle or straight angle.


A 45-degree angle looks like the bisection of a right angle. If one constructs a right angle by drawing one axis horizontally and the other axis vertically, a 45-degree angle is halfway between a flat slope and a vertical slope.