Geometry
Measuring angles worksheets
Measure eight named angles to the nearest degree. Each diagram uses a two-sided baseline, a clearly labelled vertex and one ray above the line, with a separate numeric answer key.
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Drawing angles worksheets
Construct eight named angles from stated whole-degree measures. Every prompt identifies the left or right starting ray; the separate key adds the correct new ray and endpoint label.
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Draw each named angle above the baseline from the stated starting ray. Mark the requested degree, draw the new ray through it, and label its endpoint.
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Customize this worksheetDraw above the named starting ray
Each prompt gives one of eight target degree measures and explicitly names the left or right starting ray. Align 0 degrees with that ray, mark the requested turn above the baseline, and draw the new named ray through the mark.
The student page leaves the new ray absent for construction. The separate answer key repeats the baseline and prompt, then adds the correct ray and its endpoint label.
Learning objective
What this activity builds
Use a protractor to mark a requested turn from an explicitly named horizontal starting ray, then draw and label the new ray above the baseline.
Worked example
Draw angle ABC = 146 degrees from ray BA.
Align 0 degrees with ray BA, mark 146 degrees above the baseline, then draw ray BC through the mark.
Ray BA is the fixed starting side because the prompt states it directly. C labels the new ray endpoint; the unused baseline endpoint is not part of angle ABC.
Teaching notes
Make the practice count
- Read the stated starting ray before placing the protractor.
- Make a small degree mark first, then use a ruler to draw the new ray through it.
- Check whether the requested angle should look acute, right or obtuse before drawing.
- Label only after the ray is complete so the endpoint letter stays clear of the stroke.
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Geometry
Naming angles worksheets
Identify vertices and directed rays, give four valid names for a single angle, and name every angle formed by three or four rays. Twelve questions include complete answer lists.
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Graph paper
Printable graph paper
Print square graph paper with 1/10, 1/4, 3/8 or 1/2 inch spacing, or a true 1 cm grid. Choose US Letter or A4 and preview the actual number of cells.
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