1. 4th Grade Chinese Immersion Class Yu Laoshi
Geometry
main terms
4th Grade Chinese Immersion Class Yu Laoshi

2. Any 2-dimensional (flat) area
Plane

3. A point is an exact location in space.

4. A line is a straight path of points that goes on and on in two directions.

5. A line with two endpointsB
Line Segment

6. A line with one endpoint
Ray

7. This triangle contains 3 vertices.
The point at which two rays meet.
This triangle contains 3 vertices.
Vertex

8. Two rays that meet at a vertex
Angle

9. Two perpendicular lines which form a 90 degree angle.
Right Angle

10. Two lines, equal distance apart that will never touch or intersect; non-intersecting lines
Parallel Lines

11. Lines that intersect at right angles to each other.
Perpendicular Lines