CK12 - Geometry

Ehabdrewa rectangle on the chalkboard. was and was .If Ehabdraws

in the diagonal ,whatwill be its length?

At this point,we havedistilledthe problem,createdmultiplerepresentationsof the scenario,and identified
the desiredstrategy. It is time to solvethe problem.

The diagrambelowshowsthe rectangleon the coordinategrid.

To find the lengthof , you mustidentifyits endpointson the grid. Theyare (1,1)and (9,7).Use the

distanceformulaand substitute1 for , 1 for , 9 for , and 7 for.

is 10 cm.

Finally, makesure to ask yourselftwo morequestionsto verifyyour answer.

1. Did I providethe informationthe problemrequested?

The problemaskedyou to identifythe lengthof. That is the informationprovidedwith our solution.

2. Doesmy answermakesense?

The valueof 10 cm is slightlylargerthan 6 cm or 8 cm, but that is to be expectedin this scenario.It is certainly
withinreason.A responseof 80 cm or 0.08 cm wouldhavebeenunreasonable.