OpenUp 8th Math 1.14 Practice Problems and Vocab

_____ ______ angles are created when two parallel lines are crossed by another line called a transversal. ______ _____angles are inside the parallel lines and on opposite sides of the transversal.

This diagram shows two pairs of ____ ______ angles. Angles a and d are one pair and angles b and c are another pair.

A ____ to two parallel lines is a line that cuts across them, intersecting each one.

This diagram shows a ____ line intersecting parallel lines m and l.

Lines k and l are parallel, and the measure of angle ABC is 19 degrees. Find the measure of angle ECF. If you get stuck, consider translating line l by moving B to C. Type the number only.

Lines k and l are parallel, and the measure of angle ABC is 19 degrees. Find the measure of angle BCD. If you get stuck, consider translating line l by moving B to C. Type the number only.

Find the measure of angle A. Type the number only

Find the measure of angle B. Type the number only.

Find the measure of angle C. Type the number only.