**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.

**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:A plane is a flat surface that extends in all directions.

Step 2:F, A, L, I, C lie on plane F and G, E, O, B lie on plane G. So, the first statement is false. [A plane can be named either by a single capital letter or by naming at least three non-collinear points in the plane.]

Step 3:Points G, E and F, A lie on two different planes. So, they are not coplanar. So, second statement is false.

Step 4:O and A lie on two different planes. So, they are not coplanar. Therefore, the third statement is also false.: Points F, A, L, I, C lie on the same plane and are coplanar. So, the fourth statement is correct.

Step 5

**Related Terms for Coplanar**

- Collinear
- Line
- Plane
- Point