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What's on the worksheet
- Name the kind of angle with each measure: acute, right, obtuse or straight.15°145°90°88°180°
- Name the kind of angle A to F by comparing with the corner of a sheet of paper.
- Name the kind of the marked angle in each block letter.
- As Priya's laptop opens, describe how the angle changes and name its kinds.
- Luis's tent pole: find the angle on the other side and name its kind.
- Find the largest acute and smallest and largest obtuse whole-degree angles, and count the obtuse ones.
Teach it first
The free lesson teaches it with worked examples and practice problems.
Acute, right, obtuse and straight angles: the lesson ›More Chapter 12 worksheets: Lines, angles, symmetry and classifying shapes
- 12.1Acute, right, obtuse and straight angles
- 12.2Perpendicular lines
- 12.3Parallel lines
- 12.4Classifying triangles
- 12.5Naming and classifying polygons
- 12.6Line symmetry