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Posted by **Skye** on Monday, February 14, 2011 at 2:05am.

find the equation for the altitude from each vertex of triangle abc.

- Geometry altitude -
**Reiny**, Monday, February 14, 2011 at 8:28amI will do one of them: from A to BC

slope of BC = 10/8 = 5/4

so slope of altitude = -4/5

point on it is (-2,4)

y-4 = (-4/5)(x+2)

5y -20 = -4x - 8

4x + 5y = 12 or y = (-4/5)x + 12/5

do the others the same way

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