Circle Geometry Concepts

This video from Mumu Math introduces the vocabulary related to circles. It covers basic elements such as the center, radius, diameter, circumference, and area. The video also explains lines like tangents and secants, and different types of arcs including minor, major, and semicircles. Additionally, it discusses angles in circles, specifically central and inscribed angles. The video concludes with a call to action to subscribe and share.

What is the term for the distance from the center of a circle to any point on the circle?

• Area

• Radius

• Circumference

• Diameter

Which term describes the distance across a circle through its center?

• Tangent

• Circumference

• Diameter

• Radius

What is a line called that touches a circle at exactly one point?

• Radius

• Chord

• Tangent

• Secant

Which line intersects a circle at two points?

• Radius

• Diameter

• Secant

• Tangent

What is an arc with a measure less than 180° called?

• Central Arc

• Semicircle

• Major Arc

• Minor Arc

What is the measure of a semicircle?

• 180°

• 90°

• 270°

• 360°

What is the angle called that has its vertex at the center of the circle?

• Interior Angle

• Central Angle

• Inscribed Angle

• Exterior Angle

How does the measure of an inscribed angle compare to the arc it intercepts?

• Unrelated to the arc

• Equal to the arc

• Twice the arc

• Half the arc