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Triangle XYZ is isosceles. If the measure of angle Y is 10, what is the measure of angle X? (picture not to scale)

Triangle XYZ is isosceles. If the measure of angle Y is 10, what is the measure of-example-1

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Angle y = angle z (property of an isosceles triangle)
Sum of all angles of a triangle=180°.
Angle x = 180-10-10=160°
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