jetblackcap jetblackcap

15-02-2019
Mathematics

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MadiT143 MadiT143

15-02-2019

Triangle ABC and Triangle CDE are the same so therefore the angles will be the same.

So we know that a triangle has 180° and we already know two angles of one triangle (and also the other)

70+30+x=180

100+x=180

-100 -100

x=80

Angle D is 80°

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