The image of Angle ABC after a reflection across EG IS AA'B'C'.
Which triangle must be a right triangle and why?
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AA'B'C' is right because it is the image of AABC.
AADC is right because AA' intersects AC at A
ABCC' is right because Blies of the line of reflection
ABGC is right because ECI CC.

step-by-step explanation:

the first 5 right here the next 5 i will upload as separate question

i think is 3 and 6. this took me 10 min to think.hope to and hope that my answer is brainliest.(follow me )

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

it has changed from the width and the height.

step-by-step explanation: