Last edited by mmm4444bot; 08-11-2012 at 02:36 PM. Reason: A matter of degrees :>
“... mathematics is only the art of saying the same thing in different words” - B. Russell
We are here to help you solve your exercise. Please show us your effort (i.e., show some work, explain some reasoning, or ask a specific question).
Here's a link to our FORUM GUIDELINES.
Cheers
Let angle BAC = x.
Than angle ABC = 2x.
and angle BAC = 180 - 3x.
But, Now how to find the value x ??
Now let us look at those triangles.
How does the vertex-angle bisector intersect the base - meaning if the line AD is the bisector intersecting base BC - what would be the ratio of BD and DC? If the ratio turns out to be that - does it prove that line is vertex-bisector?
Have you thought through this line?
Last edited by Subhotosh Khan; 08-12-2012 at 08:36 AM. Reason: removed unintentional smiley
“... mathematics is only the art of saying the same thing in different words” - B. Russell
Bookmarks