CK12 - Geometry

Noticethat the diagonalsin this diagramhavealreadybeendrawnin for you. To find the slope,find the

changein over the changein. This is also referredto asrise over run.

Beginby findingthe slopeof the diagonal , whichgoesfrom W(-3,2)to Y(5,-2).

Now find the slopeof the diagonal from Z(0,-2)to X(2,2).

The slopeof and the slopeof. Thesetwo slopesare oppositereciprocalsof each
other, so the two segmentsare perpendicular.

Diagonalsas AngleBisectors

Sincea rhombusis a parallelogram,oppositeanglesare congruent.One propertyuniqueto rhombiis that
in any rhombus,the diagonalswill bisectthe interiorangles.Herewe will provethis theoremusinga different
methodthan the proofwe showedabove.