PowerPoint Presentation

1.find angles 1 and 22.find x3/4. find x in these two parallelogramsReviewPut these questions on your half sheet of paperDefinition- a parallelogram with four equal angles (i.e. right angles)RectangleSpecial characteristics of rectangles

RectangleExamples3x-15A rectangle has four right angles, so, 3x-15 = 903x=105x=35ABCDTIn a rectangle diagonals are bisected just like in any parallelogram, so AC=32 (twice AT), so 6x+2=32, solve and x=5In a rectangle diagonals are equal so AC=BD and AT=DT so 5w-7 = 16, solve and w=23/5AT = 16, AC=6x+2, DT=5w-7Find x and wFind xABCDTAB = 6x-8BT = 19AC = 6y+2CD = 22

Complete the following problems on your note sheet. PracticeBT = 20AC = wABCDTABCDTPractice cont.Complete the following problems on your note sheet. Definition

- a parallelogram with four equal sidesRhombusSpecial characteristics of rhombuses

ExamplesThe diagonals of a rhombus are perpendicular so