Circles

Front

What is the part of the circle highlighted in red called?

Back

Minor arc

Front

Which of the following names a radius?

Back

Segment DB

Front

Which of the following names a diameter?

Back

Segment AC

Front

A chord is a segment that connects ___________

Back

2 endpoints of a circle

Front

What is the center and radius for a circle with the equation: (x-4)²+(y+2)²=25?

Back

C:(4, -2), r=5

Front

What is the definition of a circle?

Back

A circle is a set of points in a plane that are equidistant from a fixed point called the center.

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where r is the radius.

Front

What is the area of a circle?

Back

A = πr², where r is the radius.

Front

What is a tangent to a circle?

Back

A tangent is a line that touches the circle at exactly one point.

Front

What is a secant line?

Back

A secant line is a line that intersects a circle at two points.