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Aleksandr-060686 [28]
3 years ago
13

Two angles in a triangle add up to 125 degrees what is the size of the third angles

Mathematics
2 answers:
MariettaO [177]3 years ago
7 0
55 degrees
is the answer
RUDIKE [14]3 years ago
3 0
All the angles in a triangle should add up to 180. Therefore 180-125 is 55 meaning the third angle is 55 degrees
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By definition, two angles are supplementary if the sum of them is 180 degrees. In this case (see figure attached with the answer) the line AD is transversal to lines AB and DC. This is a proof of the Same-side interior angle theorem.

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