gab4043 gab4043
  • 03-01-2019
  • Mathematics
contestada

how do you figure out 16???

how do you figure out 16 class=

Respuesta :

jdoe0001 jdoe0001
  • 03-01-2019

since BA ≅ BC, that means is an isosceles triangle, whose twin sides make twin angles at the base, namely the interior angles at A and C are both twin angles, and their exterior angles at those point are also twins, check the picture below.

that simply means that "x" and "y" are linear angles, therefore

x + y = 180°

117 + y = 180

y = 180 - 117

y = 63.

Ver imagen jdoe0001
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