# Coplanar

## Definition of Coplanar

A set of points, lines, line segments, rays or any other geometrical shapes that lie on the same plane are said to be Coplanar.

### More About Coplanar

Parallel lines in three-dimensional space are coplanar, but skew lines are not.

### Example of Coplanar

All the points A, B, C, and D in the plane **P** are coplanar

### Video Examples: What are coplanar points

### Solved Example on Coplanar

#### Choose the Correct Statement/Statements.

- 1. Points F, A, L, I, C, G, E, O, and B are coplanar.
- 2. Points G, E, F, and A are coplanar.
- 3. O, A, and B are coplanar.
- 4. Points F, A, L, I, C are coplanar.

##### Choices:

- A. 1 and 2 only
- B. 3 and 4 only
- C. 4 only
- D. 1 only

Correct Answer: C

### Solution:

- Step 1: Corner is a point where two lines meet or intersect.
- Step 2: Here, figure 1 is a square, figure 2 is a circle, figure 3 is a rectangle, and figure 4 is a pentagon.
- Step 3: A square has 4 corners and a rectangle has also 4 corners.
- Step 4: So, figure 1 and figure 3 have 4 corners each.

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