Posted by Phyllis on Wednesday, November 24, 2010 at 8:17pm.
In the diagram below(no diagram but details will be provided), right triangle ABC and line BD is an altitude to side line AC.
* Prove that (AB)^2=(AC)(AD)
When you label the triangle B should be were the right angle is C should be at the top of the triangle and it should be ovious were A goes
The given is that triangle ABC is a right triangle
BD, B is located at the bottom were right angle is or were the lines of the triangle meets and D is directly across for B on the hypotenuse.
when you draw that you shoud see that ABC is now 2 triangles. in the bigger triangle angle D is a right angle.
i tried to explain how to draw it as much as possible hope you can help

Math(Geometry)  Reiny, Wednesday, November 24, 2010 at 11:06pm
let angle A be x
let angle C be y
In triangle ADB, if angle ADB = 90, then angle ABD = y
then angle DBC = x
and triangle
ADB is similar to triangle
BDC is similar to triangle
ABC
then AB/AC = AD/AB
(AB)^2 = (AC)(AD)
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