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Interior and Exterior Triangle Angles

Interior and Exterior Triangle Angles-example-1

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Sum of two interiors=exterior


\\ \rm\bull\rightarrowtail 2x-3+2x+15=7x-18


\\ \rm\bull\rightarrowtail 4x+12=7x-18


\\ \rm\bull\rightarrowtail 3x=30


\\ \rm\bull\rightarrowtail x=10

  • m<GHI=2(10)-3=17
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User YuDroid
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