A corner of 90 degrees is a right angle
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A 5 degree angle is an acute angle because it is greater than 0 but less than 90 degrees.
An obtuse angle is an angle which is more than 90 degrees, but less than 180.
First draw a 90 degree angle .Than draw a 20 degree angle from that 90 degree angle . Than the rest of the angle will be 90-20=70 .Now bisect the 70 degree angle we will get 70/2=35. Now add the rest of the angle means 35+20 =55 GOT 55 DEGREE ANGLE
Obtuse angle.
A 70 degree angle is an acute angle because it is greater than 0 but less than 90 degrees