Interior Angles On Parallel Lines

On parallel lines co interior or c angles add up to 180.

Interior angles on parallel lines. When the lines are parallel. Angles that are in the area between the parallel lines like angle 2 and 8 above are called interior angles whereas the angles that are on the outside of the two parallel lines like 1 and 6 are called exterior angles. Interactive student tasks iwb material angles on points and.

Geometry angles parallel lines cut by a. Worksheet parallel lines questions focussed on the angle rules with parallel lines. Alternate interior angles are interior between the parallel lines and they alternate sides of the transversal.

The worksheet is specially designed for students of grade 8 and grade 9. Arrowheads show lines are. As you can see the c shape may appear back to front but this doesn t affect the angle measurements.

If two parallel lines are cut by a transversal the alternate interior angles are congruent. If two lines are cut by a transversal and the alternate interior angles are congruent the lines are parallel. Alternate exterior angles measures are equal the name clearly describes where these angles are located.

Angles that are on the opposite sides of the transversal are called alternate angles e g. Worksheet parallel lines problems a mixture of problems based around finding angles created by parallel lines and transversals. Use these properties of the angle pairs to find the value of x.

Corresponding alternate and co interior angles. Notice that they are not adjacent angles next to one another sharing a vertex. M 1 m 2 and m 3 m 4.