2024_Parts of a Circle

Front

What is the formula for the area of a circle?

Back

Front

Define 'radius' in the context of a circle.

Back

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

Front

What is a 'diameter' in a circle?

Back

The diameter is a straight line that passes through the center of the circle and touches two points on its circumference. It is twice the length of the radius.

Front

What is a 'tangent' in relation to a circle?

Back

A tangent is a line that touches the circle at exactly one point and does not cross into the circle.

Front

Define 'arc' in the context of a circle.

Back

An arc is a portion of the circumference of a circle.

Front

What is a 'sector' of a circle?

Back

A sector is a region enclosed by two radii and the arc between them.

Front

What is a 'chord' in a circle?

Back

A chord is a line segment whose endpoints lie on the circumference of the circle.

Front

What is a 'central angle'?

Back

A central angle is an angle whose vertex is at the center of the circle and whose sides are radii.

Front

What is an 'inscribed angle'?

Back

An inscribed angle is an angle formed by two chords in a circle which have a common endpoint.

Front

How do you calculate the circumference of a circle?

Back