Posted by **dave** on Tuesday, October 19, 2010 at 12:22pm.

if the diagonals of quadrilateral ABCD intersect at their midpoints, then the quadrilateral is a parallelogram.

Prove that AM MC

--- = ---

MB MD

Ive tried figuring out this question for a while now and I cant figure it out.

- vector proofs math 536 -
**dave**, Tuesday, October 19, 2010 at 12:23pm
*******Prove that AM/BM = MC/MD

- vector proofs math 536 -
**MathMate**, Tuesday, October 19, 2010 at 12:37pm
If AC and BD intersect at their mid-points, AM=MC, and BM=MD.

Therefore

AM/MC=BM/MD=1

Transpose to get:

AM/BM=MC/MD

## Answer this Question

## Related Questions

- math - . Two groups of students are using a dynamic geometry software program to...
- Geometry - The coordinates of the vertices of quadrilateral ABCD are A (-8, 8...
- Geometry - quadrilateral A B C D on a graph. Point A is at ( -5, -1), Point B ...
- maths - Given is a quadrilateral ABCD,diagonals AC and BDare such that AO=BO=CO=...
- geometry - Given: QRST is a parallelogram. Prove: QRST is a square. Complete ...
- Math - Suppose that a given quadrilateral is a kite with no right angles. Which ...
- Geometry - quadrilateral A B C D on a graph. Point A is at ( -5, -1), Point B ...
- maths - In a parallelogram ABCD, diagonals AC & BD intersect at O. E, F, G, & H ...
- maths --plse help me.. - In a parallelogram ABCD, diagonals AC & BD intersect at...
- maths --plse help me.. - In a parallelogram ABCD, diagonals AC & BD intersect at...

More Related Questions