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Bellringer • Find the distance between the points to the nearest tenth. 1. M(2, -5), N(-7, 1) • Find the slope of the lines 2. X(0,6), Y(4,9) 6-1 Classifying Quadrilaterals Quadrilaterals • A polygon with four sides Definitions! • Parallelogram: a quad with both pairs of opposite sides parallel • Rhombus: a parallelogram with four congruent sides • Rectangle: a parallelogram with 4 right angles • Square: a parallelogram with 4 congruent sides and 4 right angles • Kite: a quad with two pairs of adjacent sides congruent and no opposite sides congruent • Trapezoid: a quad with exactly one pair of parallel lines • Isosceles Trapezoid: a trapezoid whose nonparallel opposite sides are congruent Which is which?!?! • Try and match the definition to the picture. Rectangle Square Isosceles Trapezoid Rhombus Which is which?!?! • Try and match the definition to the picture. Parallelogram Kite Trapezoid Quadrilateral Parallelogram Rectangle Step 1: Find the slope of each side. Step 2: Use the distance formula to see if any pairs of sides are congruent. Practice • Pg. 290-291 #1-26