Suppose you are an engineer who wants to build a bridge to help the community in a remote area in transporting their goods. The bridge is going to look like a trapezoid. The top of the bridge measures 80 meters while the bottom of the bridge measures 100 meters. You want to build an extra support beam halfway between the parallel bases but you don’t have a measuring device to measure the length from the midpoint of one leg to the other leg.
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Jonasbrothersviz Jonasbrothersviz · Answer 1

Answer:

a. middle line of bridge (trapezoid)

b. 80 meters + 100 meters / 2 = 90 meters

c. the upper and lower sides of the bridge are parallel but not of equa length

d. advantages: saving in material and more stable

e. easy deformation can lead to instability of the bridge

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