To construct a 225-degree angle, start by drawing a straight line to represent a base. Then, use a protractor to measure 225 degrees from one end of the line. Alternatively, you can first construct a 90-degree angle, then measure an additional 135 degrees (which is 225 degrees minus 90 degrees) on the opposite side of the base line. Finally, draw a line through the point marking the 225 degrees to complete the angle.
Half of 225 degrees is calculated by dividing 225 by 2, which equals 112.5 degrees.
With a protractor
Use a protractor.
You'll also need a protractor to construct a 220 degree angle which can then be bisected by means of a compass and a straight line to form two 110 degree angles.
use a protractor and a ruler
Describing the process in words is much more difficult than doing it. So I suggest you sketch out the steps as described. It will be much clearer that way! 1. Start with a straight East-West line. 2. Draw a line perpendicular to it - this will be North-South. 3. Now bisect the angle between West and South. This line will run from the centre to the SouthWest! 4. The angle between the line going East and this last line is 225 degrees.
Half of 225 degrees is calculated by dividing 225 by 2, which equals 112.5 degrees.
A protractor will help
With a protractor
by 60 degree and 90 degree
Use a protractor.
A 127.5 degree angle can be constructed by using a protractor and a straight edge.
You'll also need a protractor to construct a 220 degree angle which can then be bisected by means of a compass and a straight line to form two 110 degree angles.
Use a straight edge and a protractor to construct an acute angle of 65 degrees
By bisecting a 15 degree angle with a straight edge and a compass.
A 127.5 degree angle can be constructed by using a protractor and a straight edge.
Use a protractor and a straight edge to construct a 75 degree angle