Friday

November 21, 2014

November 21, 2014

Posted by **Jillian** on Tuesday, January 5, 2010 at 6:38pm.

A(-3,4) E(4,3) D(1,1)

B and C do not have coordinates

- Math -
**MathMate**, Tuesday, January 5, 2010 at 7:00pmA diagram will help solve these geometry problems.

If DC is a mid-segment, i.e. D is at the mid point of AB of triangle ABC, then mAD=mDB and since DE is parallel to BC, mAE=mEC.

By similar triangles, mBC = 2* mDE

The length of

mBC=2*sqrt((Ex-Dx)²+(Ey-Dy)²)

=2*sqrt((4-1)²+(3-1)²)

=2*sqrt(13)

**Answer this Question**

**Related Questions**

geometry - In triangle abc, point B is on segment ab, and point E is on segment ...

geometry - given: segment AB is paralell to segment DC; segment AB is congruent ...

geometry - IVEN: trapezoid ABCD EF are the midpoints of segment AB and segment ...

GeOmEtRy!!! - In triangle ABC,segment BF is the angle bisector of angle ABC, ...

Math - segment yw is perpendicular to segment xz. the perimeter of triangle xyz ...

GEOMETRY ONE QUESTION PLEASE HELP?!! - Name the smallest angle of triangle ABC, ...

geometry - A segment 12" long is divided into two segments having lengths in the...

geometry - I need to figure out this proof, the figure is two triangles forming ...

geometry - In right triangle ABC, measure of angle ACB= 90 and segment CD is the...

Geometry-8th gr - The perimeter of triangle ABC is 120. LIne segment BD bisects...