Parts of a Circle

Front

What term describes the boundary measurement of a circle?

Back

Circumference

Front

What is the distance from the center of a circle to any point on its circumference called?

Back

Radius

Front

What is the longest chord of a circle that passes through the center?

Back

Diameter

Front

What do you call a part of the circumference of a circle?

Back

Arc

Front

What is a line segment that connects two points on the circumference of a circle?

Back

Chord

Front

What is the angle formed at the center of a circle by two radii?

Back

Central Angle

Front

If the diameter of a circle is 10 m, what is the radius?

Back

5 m

Front

What is the formula for calculating the circumference of a circle?

Back

C = πd or C = 2πr

Front

What is the area of a circle with a radius of 3 m?

Back

A = πr² = 28.27 m² (approximately)

Front

What is the relationship between the radius and diameter of a circle?

Back

Diameter = 2 × Radius