rowlandradiatoramy rowlandradiatoramy

10-02-2017
Mathematics

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On a piece of paper, use a protractor to construct right triangle DEF with DE=4 in. , m∠D=90° , and m∠E=45° .

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andriansp andriansp

19-02-2017

Let's see .. . .

D

E F

Since one of the angle is 90 degree, it would be very likely that the other side could be paired with the principle of Pythagoras.
The Pythagoras match for 4 is 3 and 5, so

DE = 4 in
EF = 3 in
Df = 5 in

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