ABC has the points A(1, 7), B(-2, 2), and C(4, 2) as its vertices. The measure of the longest side of ∆ABC is  units. ∆ABC is  triangle. If ∆ABD is formed with the point D(1, 2) as its third vertex, then ∆ABD is  triangle. The length of side AD is  units.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter7: Locus And Concurrence
Section7.2: Concurrence Of Lines
Problem 6E
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ABC has the points A(1, 7), B(-2, 2), and C(4, 2) as its vertices. The measure of the longest side of ∆ABC is  units. ∆ABC is  triangle.

If ∆ABD is formed with the point D(1, 2) as its third vertex, then ∆ABD is  triangle. The length of side AD is  units.

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