Use this image to classify each pair of lines.
Three horizontal lines E F and G H and I J are intersected by two vertical lines A B and C D. A ninety degree angle is formed by A B and E F. A ninety degree angle is formed by A B and I J. A ninety degree angle is formed by C D and E F. A ninety degree angle is formed by C D and I J.
Select Parallel, Perpendicular, or Cannot Be Determined to classify each pair of lines.
Parallel Perpendicular Cannot Be Determined
AB←→ and CD←→
Parallel – line A B, and , line C D
Perpendicular – line A B, and , line C D
Cannot Be Determined – line A B, and , line C D
CD←→ and GH←→
Parallel – , line C D, , and , , line G H,
Perpendicular – , line C D, , and , , line G H,
Cannot Be Determined – , line C D, , and , , line G H,
AB←→ and GH←→
Parallel – line A B, and , line G H
Perpendicular – line A B, and , line G H
Cannot Be Determined – line A B, and , line G H
IJ←→ and CD←→
Parallel – line I J, and , line C D
Perpendicular – line I J, and , line C D
Cannot Be Determined – line I J, and , line C D
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