solve the 10 one in long method
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here is the proof...for interior angle theorem
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take a cardboardsheet and make 3 equal triangles keep 2 triangles correctly and 1 triangle reverse in the middle of 2 triangles then sum two angles then the sum is 180 degrees
va396334:
please mark as brainliest
in my book the sum of angles of triangles is 180 degrees
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