Angle Relationships a a a tr nsvers l nd two p r llel lines a a a formed by SUPPLEMENTARY ANGLES WHEN TWO OR MORE ANGLES ADD UP TO EQUAL EXACTLY 180 DEGREES VERTICAL ANGLES CORRESPONDING ANGLES If the transversal cuts across two parallel lines The corresponding angles will always be equal! <1 and <5 are corresponding <2 and <6 are corresponding <3 and <7 are corresponding <4 and <8 are corresponding Alternate Interior ANGLES Alternate interior angles will form a “Z” shape (Or a backwards “Z”) Alternate Exterior ANGLES