What Is Coplanar Vector?

Are you curious to know what is coplanar vector? You have come to the right place as I am going to tell you everything about coplanar vector in a very simple explanation. Without further discussion let’s begin to know what is coplanar vector?

In the realm of vector geometry, coplanar vectors are a crucial concept that plays a significant role in various mathematical and physical applications. Vectors are fundamental mathematical entities representing both magnitude and direction. When vectors lie in the same plane, they are said to be coplanar. Understanding coplanar vectors is essential for analyzing geometric relationships, solving problems involving forces and motion, and unraveling the complexities of three-dimensional space. In this blog, we will delve into the concept of coplanar vectors, their properties, and their importance in vector geometry.

What Is Coplanar Vector?

Vectors are geometric objects represented by directed line segments. They possess both magnitude (length) and direction and are used to represent quantities with both magnitude and direction, such as force, velocity, and displacement. Coplanar vectors refer to a set of vectors that lie in the same plane, meaning they can be represented within the same two-dimensional space.

Properties Of Coplanar Vectors:

  1. Addition and Subtraction: Coplanar vectors can be added or subtracted using standard vector addition and subtraction rules. When vectors are coplanar, their resultant vector lies within the same plane.
  2. Scalar Multiplication: Coplanar vectors can be multiplied by scalars, which are real numbers, to obtain new vectors. The resulting vectors will also lie in the same plane.
  3. Linear Combination: A linear combination of coplanar vectors, where each vector is multiplied by a scalar and then added together, results in a new vector that remains coplanar with the original set.

Importance Of Coplanar Vectors In Vector Geometry:

  1. Analyzing Forces and Motion: In physics and engineering, coplanar vectors are commonly used to analyze forces acting on objects and describe their motion in two-dimensional space.
  2. Geometric Relationships: Coplanar vectors help determine geometric relationships, such as angles and distances between lines and points, within the same plane.
  3. Three-Dimensional Space Simplification: Coplanar vectors are often used as a simplification technique when dealing with three-dimensional space, allowing complex problems to be analyzed within a two-dimensional plane.
  4. Vector Projections: The concept of coplanar vectors is crucial in understanding vector projections and their applications in various fields, such as engineering and computer graphics.


Coplanar vectors are a fundamental concept in vector geometry that represents vectors lying within the same plane. Understanding coplanar vectors is essential for analyzing geometric relationships, solving problems involving forces and motion, and simplifying complex scenarios in three-dimensional space. As a powerful mathematical tool, coplanar vectors find applications in physics, engineering, computer graphics, and other fields that involve the representation and manipulation of quantities with both magnitude and direction. By grasping the properties and significance of coplanar vectors, mathematicians, scientists, and engineers can efficiently model and analyze a wide range of real-world problems with precision and accuracy.


How Do You Know If A Vector Is Coplanar?

How do you Know if Two Vectors are Coplanar? If the scalar triple product of any three vectors is 0, then they are called coplanar. The vectors are coplanar if any three vectors are linearly dependent, and if among them not more than two vectors are linearly independent.

What Is Coplanar And Example?

Any geometric object or shape such as a line, point is said to be coplanar if they lie on the same plane. Otherwise, they are called non-coplanar. Example: Points P, Q, R, S lie in the same plane. So, they are coplanar.

What Is The Example Of Coplanar Vector?

Given: →a,→b and →c are coplanar. Vectors →a−2→b+3c,−−→2a+→3b−→4c and−→b+→2c are non-coplanar vectors.

What Are Coplanar And Non-Coplanar Vectors?

Two or more lines are said to be coplanar if they lie on the same plane, and the lines that do not lie in the same plane are called non-coplanar lines.

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