How to Construct a 45 Degree Angle with a Compass - Math Lessons

Construction of Angles Using Protractor and Compass (Examples)

Step 1: Draw a line segment on your paper using a straightedge. Label the endpoints A and B.Step 2: Place the compass point on A, then set the width of the compass so that the distance is slightly longer than half the length of AB. Then draw an arc that passes through AB and is above and below point A.Step 3: Keep the compass setting and place the point of the compass at point B, then draw an arc that passes through AB and is above and below point B. The intersection of these arcs should constru