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Grade 4 Math · World 9: Angle and Shape Studio · Level 86
Parallel and Perpendicular Lines
Find them in drawings, letters, and shapes.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 86
- Parallel lines go the same way and never meet, like the two sides of the letter H.
- Perpendicular lines meet or cross at a right angle, a square corner. The letter L has perpendicular line segments.
- Shapes have them too. A rectangle has 2 pairs of parallel sides, and its sides meet at right angles. The arrows show the parallel pairs.
Georgia's K-12 Mathematics Standards:
- 4.GSR.8.1 — Explore, investigate, and draw points, lines, line segments, rays, angles (right, acute, obtuse), perpendicular lines, parallel lines, and lines of symmetry. Identify these in two-dimensional figures.