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Mathematics 20 Online
OpenStudy (itrymath):

Look at the figure below. Which information is required to prove that angle ABD is congruent to angle ACD? (4 points) Segment AC is congruent to segment AB. Segment AD is congruent to segment AC. Segment BD is congruent to segment AD. Segment AB is congruent to segment BD.

OpenStudy (itrymath):

@steve816

OpenStudy (hayisforhorses):

AC must equal AB

OpenStudy (itrymath):

B

OpenStudy (steve816):

I am thinking that it has to beSegment AC is congruent to segment AB

OpenStudy (itrymath):

how can you be sure

OpenStudy (steve816):

I agree with @hayisforhorses

OpenStudy (itrymath):

i think its B

OpenStudy (steve816):

None of the other choices makes sense.

OpenStudy (hayisforhorses):

Both angles share the side AD, so the only changing sides are AC and AB. If they are both equal, so are the angles.

OpenStudy (itrymath):

true

OpenStudy (itrymath):

thanks alot!

OpenStudy (steve816):

No problem :) Good job @hayisforhorses

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