Problem

The points I(6,9),J(1,3),K(3,6), and L(4,0) form quadrilateral IJKL. Plot the points then click the "Graph Quadrilateral" button.
Click on the graph to plot a point. Click a point to delete it.
Find the desired slopes and lengths, then fill in the words that BEST identifies the type of quadrilateral.

Answer

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Answer

Answer: Parallelogram

Steps

Step 1 :mIJ=3(9)1(6)=67

Step 2 :mJK=6(3)31=92

Step 3 :mKL=603(4)=67

Step 4 :mIL=0(9)4(6)=92

Step 5 :dIJ=(1(6))2+(3(9))2=49+36=85

Step 6 :dJK=(31)2+(6(3))2=4+81=85

Step 7 :dKL=((4)3)2+(06)2=49+36=85

Step 8 :dIL=((4)(6))2+(0(9))2=4+81=85

Step 9 :Answer: Parallelogram

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