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  • 04-02-2019
  • Physics
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anthoniia anthoniia
  • 04-02-2019

∠BAC= 180-110 (angles on a straight line=180)

∠BAC=70

Triangle ABC is isoceles

∠ABC=∠ACB

Sum of angles in a triangle = 180

180-70=110

110/2=55

x=55

∠BCA= 55 (bottom angles are equal)

180-55=125

y=125

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