1.1 Angles and Lines II
Identifying Parallel, Transversals, Corresponding Angles, Alternate Angles and Interior Angles
(A) Parallel lines
Parallel lines are lines with the same direction. They remain the same distance apart and never meet.
(C) Alternate angles
(D) Corresponding angles
PT3 Smart TIP
Alternate angles are easily identified by tracing out the pattern “Z” as shown.
Corresponding angles are easily identified by the pattern “F” as shown.
Interior angles are easily identified by the pattern “C” as shown.
Construct a line parallel to PQ and passing through W.
a = 40o and b = 50o← (Alternate angles)
y = a + b
= 40o+ 50o