Parallel lines are lines which are always the same distance apart and never meet. Arrowheads show lines are parallel.
When a pair of parallel lines is cut with another line known as an intersecting transversal, it creates pairs of angles with special properties.
Corresponding angles are equal. The lines make an F shape. Notice that the F shape can be upside down or back to front.
Alternate angles are equal. The lines make a Z shape which can also be back to front.
Vertically opposite angles are equal.
Calculate the angles and . Give reasons for your answers.
is . Corresponding angles are equal.
is . Angles on a straight line add up to 180°.