How do you write coordinate geometry proofs.
1) You must know the distance formula, slope formula and midpoint formula.
2) You must know the key properties of the quadrilaterals.
Hint: USE the graph!!!
Click here for a review.
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Common ways to show a quadrilateral is a….
•Parallelogram – Opposite sides are congruent and parallel
•Rectangle- Parallelogram with congruent diagonals (not perpendicular) & right angles
•Rhombus – Parallelogram with congruent sides and non congruent perpendicular diagonals
•Square – Parallelogram with congruent, perpendicular diagonals
•Isosceles Trapezoid – one pair of parallel sides and one pair of congruent non parallel sides. Diagonals not congruent
