Review: Circle Theorems

Which of the following is FALSE?

• segment GD appears to be a secant segment
• arc HC is a semicircle 
• angle CAD is an inscribed angle
• angle CED is a central angle

Which of the following is TRUE?

• segment ED is a diameter
• arc CA is a major arc
• segments BF, AC, and AD are chords
• angle HCA is a central angle

Which of the following is an arc whose measure is greater than 180 degrees?

• arc CH
• arc HD
• arc FDA
• arc EHF

Which is equivalent to m<CAD?

• the measure of arc HC
• twice the measure of arc CD
• half the measure of arc CD
• the measure of <CED

If the measure of <CED is 116^o, which must be TRUE?

• CD = 232^o
• HD = 64^o
• <G = 116^o
• <A = 29^o

Which of the following is FALSE?

• measure of a central angle is equal to its intercepted arc
• a diameters split circles into 2 arcs that both measure 180^o
• a full circle measures 360^o
• inscribed angles is twice the measure of its intercepted arc

Which of the following is NOT true?

• <DGE is a central angle
• <ACF is an inscribed angle
• <ABF is an inscribed angle
• <GFE is a central angle

Which of the following must be TRUE?

• <ACF is congruent to <ABF
• <DGE is congruent to <EDF
• <CGD is a right angle
• <ACF is congruent to <BFC