Several students made comments about this image. A triangle has angles B, C, D. The exterior angle to angle B is A. Which comment is true? “If I know the measures of A and B, I can subtract those measures from 180 to find the measures of the other two angles.” “If I know the measure of C, I can find the measure of angle A because they are the same.” “If I know the measures of angles C and B, I can find the measures of A and D.” “If I know the measure of angle A, I can find the measure of angle D by subtracting from 180

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Several students made comments about this image.

A triangle has angles B, C, D. The exterior angle to angle B is A.

Which comment is true?
“If I know the measures of A and B, I can subtract those measures from 180 to find the measures of the other two angles.”
“If I know the measure of C, I can find the measure of angle A because they are the same.”
“If I know the measures of angles C and B, I can find the measures of A and D.”
“If I know the measure of angle A, I can find the measure of angle D by subtracting from 180
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1 Answer

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The third comment is the true one: "If I know the measures of angles C and B, I can find the measures of A and D."

This is because you can use the angle B to find angle A by subtracting it from 180, and you can find angle D by adding together C and B and subtracting that from 180.

I hope this helps!

Step-by-step explanation:
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