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10-09-2020
Mathematics

contestada

help please? its geometry

help please its geometry class=

Respuesta :

10-09-2020

Answer:

∠4=135

Step-by-step explanation:

vertical angles are always equal

∠1=∠3

3x-9=x+27

3x-x=27+9

2x=36

x=36/2=18

∠1 =3x-9

∠1=3(18)-9

∠1=54-9=45

∠1+∠4=180 degrees

45+∠4=180

∠4=180-45

∠4=135

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