Lesson 6 of 10
Drawing an angle
Show on a big screenReading an angle is one skill. Drawing an angle is the opposite skill.
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Step 1 of 4
- Draw a ray with your ruler. Mark the vertex.
- Put the protractor centre on the vertex. Put its base on the ray.
- Find your degree mark. Make a dot.
- Lift the protractor. Draw a ray from the vertex through the dot.
The rule
Put the protractor centre on the vertex. Its base lies on your first ray.
Read the scale that starts at 0 on that ray. Mark the degree you want.
The second ray goes from the vertex through your mark.
Example
To draw 50°, put the centre on the vertex. Put the base on the ray. The 0 on the scale lies on your ray. Count up the scale to 50. Make a dot at 50. Draw a ray from the vertex through the dot. The two rays make 50°.
Try the lab to finish this lesson.