Interior and Exterior Triangle Angles

asked May 23, 2023 7.1k views

14 votes

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10 votes

Sum of two interiors=exterior

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

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

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

$\\ \rm\bull\rightarrowtail x=10$

YuDroid answered May 29, 2023

5.3k points

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