Circles and Its Parts

What do you call a closed plane figure that is made of points with the same distance from the center?

• circle

• rectangle

• square

• triangle

Which of the following is a segment that has endpoints at the center of the circle and a point on the circle?

• chord

• circumference

• diameter

• radius

Which of the following is an angle with vertex on the circle and sides contain chords of the circle?

• acute angle

• central angle

• inscribed angle

• obtuse angle

What do you call an arc which measures one half of the circle?

• chord

• major

• minor

• semicircle

Which of the following is formed when two radii meet at the center of a circle?

• acute angle

• central angle

• inscribed angle

• obtuse angle

What part of the circle is a curved portion?

• arc

• chord

• diameter

• radius

What part of a circle is a line segment with endpoints on the circle?

• central angle

• chord

• diameter

• radius

Which of the following is an arc that measures less than a semicircle?

• circumference

• intercepted arc

• major

• minor

If the central angle of a circle measures  $20\degree$   , what is the measure of the intercepted arc of the same circle?

•  $10\degree$   

•  $20\degree$  

•  $40\degree$  

•  $80\degree$  

What is a line segment that passes through the center connecting two points on the circle?

• chord

• diameter

• inscribed angle

• radius