Parts of Circles HW1

What do we call the closed curve whose points are equidistant from the center, and which limits the circle?

• circumference

• radius

• diameter

• chord

Which refers to the two equal parts obtained by dividing the circumference along the diameter?

• arc

• sector

• semi-circle

• quarter-circle

• semi-circumference

A pizza is cut into halves. What does half of a pizza represent?

• whole

• semi-circle

• quarter

• slice

Two circles touch at exactly two points. What is the term for their position?

• tangent

• secant

• intersecting

• concentric

Which of the following refers to two circumferences having no point in common, but one is inside the other?

• internally tangent

• external

• internal

• concentric

Two coins were placed beside each other touching at exactly one point. What do we call the point where they are touching?

• point of contact

• point of tangency

• intersection

• tangent point

What is represented by line MQ which is a straight line having one point in common with the circumference?

• secant line

• chord

• tangent line

• diameter

Which of the following are two circumferences having only one point in common and are external to each other?

• internally tangent

• externally tangent

• concentric

• intersecting

The line segment joining the center to any point on the circumference is called diameter.

• TRUE

• FALSE

The point of tangency and the center of a circle are the same.

• TRUE

• FALSE