stephceleste20pdjrep stephceleste20pdjrep

23-08-2018
Mathematics

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I need help with 25.

I need help with 25 class=

Respuesta :

choixongdong choixongdong

23-08-2018

Sum of linear pair of angles = 180°

so

<EFG + <GFH = 180°

2n + 21 + 4n + 15 = 180°

6n + 36 = 180°

6n = 144

n = 24

<EFG = 2(24) + 21 = 69°

<GFH = 4n + 15 = 4(24) + 15 = 111°

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