leiaelizb
leiaelizb leiaelizb
  • 04-05-2018
  • Mathematics
contestada

Can someone please help me with this

Can someone please help me with this class=

Respuesta :

lironica
lironica lironica
  • 04-05-2018
clearly its an isosceles triangle (two sides are equal)

then according to the theorem the third angle which is in front of 21 should be

and we know that sum of 3 angles in triangle is 180

x+x+38=180

2x=142

x=71
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