1.

3. Find the value of χ in each of the following diagrams:1252xSa1052x

Answer»

The sum of interior angles is equal to the externally opposite angle. a) 2x+x=1083x=108 x=36 b) 2x +3x=1255x=125x=25 c) the sum of all angles in a triangle is 180.60+50+x=180x=180-110x=70



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