With a straight edge and a protractor
(90 - 78)/2 ie 6o
draw the outside angle if you want to show 270 degrees then you draw a 90 degree angle but draw the circle outside of it
A right angle measures 90 degrees
to construct an angle of 20 degrees all you have to do is to trisect an angle of 60degrees
use a protractor
An acute triangle.
A reflex angle is an angle greater than 180 degrees and less than 360 degrees. To construct one draw two lines at an angle and draw the angle measurement circle around the side you normally don't do it on.
draw 2 angles that add up to 180 degrees
An angle of 180 degrees is a straight line
obtuse* angles are between 180 degrees and 90 degrees. Straight line and right angle.
A protractor is used to draw a right angle of 90 degrees.
it