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McGraw Hill Integrated II, 2012 View details

4. Proving Angle Relationships

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Exercise 53 Page 307

Is l ∥ m? Is l ∥ n?

Since l ∦ m and l ∦ n it must intersect both lines, m and n.

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From the diagram we can see that line l is not parallel to line m or line n.

We know that when two lines are not parallel then they intersect, at one point or at infinitely many points. Therefore, we can conclude that l intersects both lines, m and n.

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Exercises p.304-307

Exercise 53 Page 307

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