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Grade 4 Math · World 9: Angle and Shape Studio · Level 85
Points, Lines, Segments, and Rays
Name and spot each one.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 85
- Welcome to the Angle and Shape Studio! A point is an exact spot. We name it with a letter: point A.
- A line goes on forever in both directions: that's what the arrows mean. A line segment is part of a line, with two endpoints.
- A ray has one endpoint and goes on forever the other way, like a beam of light. Ray EF starts at E.
- Shapes are made of these. Each side of a triangle is a line segment, and each corner is a point.
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.