4.In the figure, x ∥ y and a and b are transversals. ∠10 ≅ ∠15, what will be the reason for this?
a.ALTERNATE INTERIOR ANGLE
b.ALTERNATE EXTERIOR ANGLE
c.CORRESPONDING ANGLE
d.SAME SIDE INTERIOR
e.SAME SIDE EXTERIOR
f.VERTICAL ANGLES
g.LINEAR PAIR
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Answer:
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F. VERTICAL ANGLES.