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Ray CE is the angle bisector of ACD. Which statement about the figure must be true?

mECD = mECB
mACE = mACD
ACE DCB
ECD ACD

Ray CE is the angle bisector of ACD. Which statement about the figure must be true-example-1
User Eltiare
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ACE DCB

hope this helped

User Liakoyras
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We are given that ray CE is an angle bisector of angle ACD. With this, we have the equation,
mACE = mECD

Next, we look at the choices
mECD = mECB > This not possible since ray CD is between the two angles
mACE = mACD > This is still not possible since ray CE is between the two angles
mACE = mDCB > This is possible since angles ACE, ECD and DCB are complementary angles.
mECD = mACD > This is not possible since ray CE is between the two rays

The answer is the third option
User Bitoiu
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