CK12 - Geometry

10. Perimeterand Area........................................................................................................... ...

To find the area,you needto counthow manyof thesecirclesfit into the rectangle,includingpartsof circles. So far you can see that ...

This is obviousbecausecongruentfigureshavethe sameamountof spaceinsidethem.However, two figures with the samearea are not necess ...

base(or length) feet height(or width) feet But notice,too, that the baseis the numberof feet in one row of unit squares,and the ...

Area Now we can buildon the rectangleformulato find areasof othershapes. Parallelogram Example 4 How couldwe find the area of th ...

Makeit into a parallelogram.This can be doneby makinga copyof the originaltriangleand puttingthe copytogetherwith the original. ...

Base Height Area 1.? 2.? 3.? 4.? 5.? 6.? The carpetfor a -foot by -foot roomcost. The samekind of carpetcost for a room with a ...

A hexagon is drawn on a coordinate grid. The vertices of the hexagon are and Whatis the area of Answers 1. 2. 3. 4. 5. 6. fee ...

it as a rectangle.Oncewe do this, we can derivenew formulasfrom the old ones. We’ll also needto reviewbasicfactsaboutthe trapezo ...

Areaof Trapezoidwith Bases and and Altitude Trapezoidwith bases and and altitude or Noticethat the formulafor the area of a trap ...

Kite Rhombus Congruentsides Pairs All Oppositeanglescongruent Pair yes. Pair maybe Both pairsyes Perpendiculardiagonals Yes Yes ...

Noticethat: Thebaseandheightof therectangleare the sameas the lengthsof the twodiagonalsof thekite. The rectangleis dividedinto ...

Carpetfor floors,paintfor walls,fertilizerfor a lawn,and more:areasneeded. Tech Note- GeometrySoftware You saw earlierthat the ...

is the lengthof the slantedside. is the lengthof the horizontalline segment.Eachshadedsection is a rhombus. The shadedsectionsar ...

Whatis the area of? In the figurebelow: is a square feet feet Whatis the area of? The area of is whatfractionalpart of the area ...

are parallel. 2. slopeof and are the bases, is an altitude. For a parallelogram, = (the “bases”are two of the parallelsides),so ...

Use scalemodelsor scaledrawings. Introduction We’ll beginwith a quickreviewof someimportantfeaturesof similarpolygons.You reme ...

b.Whatis the scalefactorrelatingthe rhombi? The scalefactorrelatingthe smallerrhombusto the largerone is c.Whatis the perimetero ...

Thinkaboutthe area of a polygon.Imaginethat you look at a squarewith an area of exactly squareunit. Of course,the sidesof the sq ...

Scaledrawingsand modelsare widelyusedin design,construction,manufacturing,and manyotherfields. Sometimesa scaleis shown,such as ...