1.1. Line
1.2. Ray
1.3. Line segment
1.4. Supplementary angles
1.5. Parallelism
1.6. Complementary angles
- A line is a straight path of points with no end or beginning.
- A ray is a straight path of points which has a start but no endpoint.
- A line segment is a definite path of points with two endpoints.
- Angles adding up to 180° are called supplementary angles.
- ll symbol indicates parallelism which means that two lines are parallel to each other i.e. runs in the same path but never meets .
- Complementary angles add upto 90° and shares a vertex .