azarialove03 azarialove03

31-10-2018
Mathematics

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how to find x in a triangle with exterior angles

how to find x in a triangle with exterior angles class=

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saliarheva saliarheva

31-10-2018

Since RS and ST are congruent sides, angles SRT and STR will be equal. Also, angles STU (5x) and STR added together equals 180. Therefore angles STU and SRT will also equal 180. All that's left to do is set up the equation and solve. 5x - 30 + 5x = 180.

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