Transcript 3-1 Lines and Angles

3-1 Lines and Angles
Problem 1: Identifying
Nonintersecting Lines and Planes
In the figure, assume that lines and
planes that appear to be parallel are
parallel.
• Which segments are parallel to 𝐴𝐵
• Which segments are parallel to 𝐶𝐷
• What are two pairs of parallel
planes
• What are two segments parallel to
plane BCGF
In the figure, assume that lines
and planes that appear to be
parallel are parallel.
• Which segments are parallel
to 𝐴𝐷
• Explain why 𝐹𝐸 and 𝐶𝐷 are
not skew
• What are two segments
parallel to plane DCGH
Transversal: a line that intersects two or
more coplanar lines at distinct points
Angles formed by Transversals
Angles formed by Transversals
Problem 2: Identifying an
Angle Pair
What are three pairs of
corresponding angles?
Problem 3: Classifying an Angle
Pair
The photo shows the Royal Ontario Museum in
Toronto, Canada. What are angles 2 and 4?
The photo shows the Royal Ontario Museum in
Toronto, Canada. What are angles 1 and 3?