Help please :)
Prove or disprove that the quadrilateral defined by the points A(6,2), B(3,4), C(1,1), D(4,-1) is a rectangle.

Question

Help please :) 
Prove or disprove that the quadrilateral defined by the points A(6,2), B(3,4), C(1,1), D(4,-1) is a rectangle.

tylermckinney16 · Answer

@Directrix

directrix · Answer

Find the slope of segment AB

A(6,2), B(3,4),

Use that online slope calculator if you like.

directrix · Answer

http://calculator.tutorvista.com/slope-calculator.html

tylermckinney16 · Answer

Slope(m)=-0.667 @Directrix

triciaal · Answer

another approach
think about the characteristics of a rectangle
example  2 pairs of parallel congruent sides; cross at right angles 
to cross at right angles means the lines are perpendicular 
find the lengths and the slopes to use in your proof

triciaal · Answer

do you have enough information now or do you need more?