Pass Check: Angles & Angle Rules
Use angle facts on lines, at points, in triangles and with parallel lines.
Vertically opposite angles
Equal angles formed opposite each other where two lines cross.
Alternate angles
Equal angles on opposite sides of a transversal, between two parallel lines (Z-shape).
Corresponding angles
Equal angles in matching positions where a transversal crosses parallel lines (F-shape).
Co-interior angles
Angles between parallel lines on the same side of a transversal, summing to 180° (C-shape).
Quick check
Mixed quiz
1. Two angles on a straight line are 40 degrees and x. Find x.
2. Two parallel lines are cut by a transversal. One angle is 46 degrees. Find the co-interior (allied) angle.
3. Which type of angles are formed in an F-shape pattern across parallel lines?
4. Two parallel lines are cut by a transversal. One angle is 40 degrees. Find the co-interior (allied) angle.
5. Two angles on a straight line are 35 degrees and x. Find x.
6. Two parallel lines are cut by a transversal. One angle is 43 degrees. Find the co-interior (allied) angle.
7. Two parallel lines are cut by a transversal. One angle is 58 degrees. Find the co-interior (allied) angle.
8. Two angles on a straight line are 65 degrees and x. Find x.