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Hint: If Angle XYZ (Exterior Angle Y) is 115, then Angle XYW (Interior Angle Y) must be 65 since they are supplementary angles.

Hint If Angle XYZ Exterior Angle Y Is 115 Then Angle XYW Interior Angle Y Must Be 65 Since They Are Supplementary Angles class=

Answer :

MUSHROOMOATIN
Since all angles in a triangle are equal to 180 and you already have two angles you just have to subtract.
So, 180-(65 + 45)
Simplify = 180- 110
Equals = 70

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