SOLUTION: Solutions for determining parallelograms

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Question 1079744: Solutions for determining parallelograms
Answer by ikleyn(53763)   (Show Source): You can put this solution on YOUR website!
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See the lessons in this site
    - HOW TO prove that two vectors in a coordinate plane are perpendicular
    - HOW TO prove that a triangle in a coordinate plane is a right triangle
    - HOW TO check if a quadrilateral in a coordinate plane is a parallelogram
    - HOW TO check if a quadrilateral in a coordinate plane is a rectangle
    - HOW TO check if a quadrilateral in a coordinate plane is a rhombus
    - HOW TO check if a quadrilateral in a coordinate plane is a square



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