Loading...

Lesson: Geometry Intermediate - 13

Circles

[Page 13 of 24]

The second type of geometric figure we will study today is the circle.

A circle is defined as the set of all points that are the same distance from the center. Since the sum of the angles around any given point is 360°, a circle measures 360° around its center.

The radius is the distance from the center to any point on the circle.

The diameter is a straight line from one point on a circle to another that passes through the center of the circle. A circle's diameter is always twice the length of the circle's radius.

In the diagram above, Q is the midpoint, AQ, CQ, and BQ are all radii, and AQB is a diameter.

A circle is always named after its center. The circle above is Circle Q.

Next to display next topic in the chapter.

Test Prep Lessons With Video Lessons and Explained MCQ

Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.