Drawing an angle with a protractor

This is the step-by-step, printable version. If you PRINT this page, any ads will not be printed.

See also the animated version.

Step 1 Place the protractor so that the origin (small hole) is over the point M.
Step 2 Rotate the protractor so that the base line is exactly along the line ML.
Step 3 Using (in this case) the inner scale, find the angle desired - here 42°.
Step 4 Make a mark at this angle, and remove the protractor
Step 5 With a ruler, draw a line from M to the mark you just made. Label this point V.
Step 6 Done. The line drawn makes an angle LMV with a measure of 42°
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Other constructions pages on this site




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Triangle Centers

Circles, Arcs and Ellipses


Non-Euclidean constructions