Apply Test Taking Strategie:Vertical Angles and Linear Pairs

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Linear pairs are two adjacent angles that form a straight line. They are supplementary, meaning they add up to 180°.

Combine like terms and simplify the equation to isolate x.

Alternate interior angles are equal.

The sum of the angles in a linear pair is 180°.

Supplementary angles are two angles whose measures add up to 180°.

x = 180° - 75° = 105°.

Supplementary angles are two angles that add up to 180°.

Alternate interior angles are located on opposite sides of the transversal and inside the two parallel lines.

x = 21°.