zarias2 zarias2
  • 11-07-2018
  • Mathematics
contestada

I’m confused on this one

Im confused on this one class=

Respuesta :

choixongdong
choixongdong choixongdong
  • 11-07-2018
AD = CD
BD = BD
<C = <A = 90
Triangle ABD = Triangle CBD
so <ABD = <CBD = 18°

<ABC =  <ABD + <CBD = 18° + 18° = 36°

Answer
 <ABC = 36°
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