Which undefined term is used to define an angle?

Asked by maham237 @ 28/11/2020 in Mathematics viewed by 365 People

line
plane
point
ray

Answered by maham237 @ 28/11/2020

The Undefined term that is used to define an angle is a point.

Further Explanation:

Angle

An angle is defined as the union of two rays with a common endpoint.
The common end point is known as the vertex of the angle while the rays are known as the sides of the angle.

A ray

It is a part of a line with one end point and proceeds on in one direction.

Naming of angles

Angles can be named in three different ways;

Using three Capital letters such as ∠ PQR, or ∠BCD. The middle letter represents the vertex of the angle. Therefore, the angles above are read as "angle PQR" and angle BCD.
Using the Vertex of the angle. For example, in the case of ∠PQR, can also be called angle Q, while ∠BCD can be called angle C.
Angles can also be named by placing any number or symbol at the vertex in the interior of the angle. Such that angles can be called angle 1 or angle 3 , or angle 5, and so on.

Angles are measured using a tool known as a protractor

Measuring of an angle using a protractor

To measure the angle, the mid-point of a protractor is placed on the vertex of the angle.
Then lining up one side of the angle with the zero line of the protractor.
Then read the degrees where the other side crosses the number scale.

Keywords: Rays, angles, properties of angles, measurement of angles

Learn more about;

Angles: brainly.com/question/1745042
Rays: brainly.com/question/1745042
Units used to measure angles: brainly.com/question/8812311
Methods of naming angles: brainly.com/question/1594009

Measuring angles: brainly.com/question/1594009

Level: Middle school

Subject: Geometry

Topic: Angles

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