The second

The second angle of a triangle is the same size as the first angle. The third angle is 12 degrees larger than the first angle. How large are the angles?

Correct result:

A =  56 °
B =  56 °
C =  68 °

Solution:

A+B+C=180 A=B C=12+A  A+A+(12+A)=180  3A=168  A=56=56
B=A=56=56
C=12+A=12+56=68

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