mrsclnantambu9794
19.09.2019 •
Mathematics
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Ответ:
We know that the sum of the three angles of a triangle = 180°
∠AED = 48°
∠DAE = 42°
∠ADE =x
∠AED + ∠DAE +∠x =180°
48°+42°+x° = 180°; →→90°+x°=180° and x°= 90°
That means that AC is perpendicular to EF
Ответ:
0.155
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