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(HELP) Find the measures of the angles marked with letters.​

(HELP) Find the measures of the angles marked with letters.​-example-1
User Wagnerpeer
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y= 70°
In an isosceles triangle the two base angles are the same and as angles in a triangle add to 180, 180-40=140, 140/2= 70
User Atsuhiro Teshima
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