Lines
Learn what lines, line segments, and rays are and how to use them.
This course contains 6 segments:
Lines, line segments, and rays
Let's draw points, lines, line segments, and rays. We'll also think about perpendicular and parallel lines and identify these in two-dimensional figures. Common Core Standard: 4.G.A.1
Measuring segments
Using a number line, let's learn how we measure segments.
Parallel and perpendicular
Learn the definitions of "parallel" and "perpendicular".
Points, lines, & planes
Extending thinking from points and lines (1 and 2 dimensions) to planes (3 dimensions).
Geometric definitions
Consider how precise definitions of geometry terms are like angle, circle, parallel lines, and a few others.
The golden ratio
Explore a very famous and useful ratio.
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| Rating | Not enough ratings |
|---|---|
| Length | 6 segments |
| Starts | On Demand (Start anytime) |
| Cost | Free |
| From | Khan Academy |
| Download Videos | On all desktop and mobile devices |
| Language | English |
| Subjects | Mathematics |
| Tags | Math Geometry |
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| Rating | Not enough ratings |
|---|---|
| Length | 6 segments |
| Starts | On Demand (Start anytime) |
| Cost | Free |
| From | Khan Academy |
| Download Videos | On all desktop and mobile devices |
| Language | English |
| Subjects | Mathematics |
| Tags | Math Geometry |
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