Draw a straight line segment using a ruler. This will be one arm of your angle. Mark one endpoint of this line segment as the vertex of the angle.

This will be one arm of your angle. Mark one endpoint of this line segment as the vertex of the angle.

Align the baseline of the protractor with the straight line segment you drew in Step 1. Ensure the $0^\circ$ mark on the protractor aligns with the line segment.

• For $15^\circ$, find the $15^\circ$ mark.
• For $60^\circ$, find the $60^\circ$ mark.
• For $70^\circ$, find the $70^\circ$ mark.
• For $120^\circ$, find the $120^\circ$ mark. (Note: For angles greater than $90^\circ$, you will use the outer scale if your baseline is aligned with the inner $0^\circ$, or vice versa).

Use your ruler to draw a straight line segment from the vertex through the dot you just made. This new line segment is the second arm of your angle.

The angle formed between the two line segments is the desired angle.