Math Angles, Triangles and Circles

A ____ angle is an angle whose vertex is a the center of a circle.

• supplementary

• complimentary

• central

• obtuse

135°

145°

35°

45°

• 135°

• 145°

• 35°

• 45°

Which of the following names a radius?

• segment AC

• segment DB

• segment AB

• segement BC

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

• semi-circle arc

• major arc

• minor arc

• sector

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

• semi-circle arc

• major arc

• minor arc

• sector

A chord is a segment that connects ___________

• the center to the endpoint

• to one point outside the circle

• a central angle

• 2 endpoints of a circle

Which is true of a minor arc?

• It forms half a circle.

• It forms a whole circle.

• It measures greater than 180 degrees. 

• It measures less than 180 degrees.

Which words describe two circles with the same radius?

• Similar Circles

• Concentric Circles

• Congruent Circles

• Semicircle

Which of the following would be a major arc in the diagram?

• BC

• BCD

• CD

• AB