Bell Ringer 10182011 Which set of ordered pairs

Bell Ringer 10/18/2011 Which set of ordered pairs could be ordered pairs of a linear function? a. {(0, 0), (1, 1), (2, 8), (3, 27)} b. {(0, 0), (1, 1), (2, 4), (3, 9)} c. {(0, 0), (1, 1), (2, 2), (3, 3)} d. {(0, 0), (1, 1), (2, -1), (3, -4)} 1. According to a pedometer, it was 3600 steps around a square walking path. What would be the area of the land bordered by the walking path in square yards if the average step is about 2. 25 feet? a. 405, 000 yd² b. 450, 000 yd² c. 455, 625 yd² d. 562, 500 1.

8. 2 Parallelograms �How can we recognize and apply properties of the sides, angles, and diagonals of parallelograms?

Parallelogram �A parallelogram is a quadrilateral with both pairs of opposite sides parallel A B D Symbols: C ABCD ; AB||DC and AD||BC

Properties of Parallelograms Opposite sides of a parallelogram are congruent AB = DC AD = BC Opposite angles in a parallelogram are congruent m� A = m� C m� B = m� D A Consecutive angles in m� A+m� B=180 a parallelogram are m� B+m� C=180 supplementary m� C+m� D=180 m� D+m� A=180 If a parallelogram has one right angle, it has four right angles. m� G=90 m� H=90 m� J=90 m� K=90 D B C G H K J

More Properties of Parallelograms �The diagonals of a parallelogram bisect each other �RQ=QT and R SQ=QU S Q U T �Each diagonal of a parallelogram separates the parallelogram into two congruent triangles. �∆RUT≅∆TSR �∆SRU≅∆UTS

Also… �If one pair of opposite sides of a quadrilateral is both parallel and congruent, then the quadrilateral is a parallelogram.

8. 2 & 8. 3 Practice Problems: � 8. 2 #’s 17, 23, 37 � 8. 3 #’s 13, 19, 25

HW 8. 2 & 8. 3 � 8. 2 #’s 17 -39 odd � 8. 3 #’s 13 -33 odd