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karenaustin5
20.07.2019 •
Mathematics
Iknow how to solve number 4 but i’m having a hard time with 1,2,3,5,6
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Ответ:
angle b=112> by vertical angles
angle a+112=180> supplementary angles
angle a==180-112> angle a=68
angle c=angle a> by vertical angles
angle c=68
the answer part 1) is
angle a=68°
angle b=112°
angle c=68°
part 2)
angle a+15+38=180> angle a=180-(15+38)> angle a=127
the answer part 2) is
angle a=127°
part 3)
angle b=40> by vertical angles
angle d=70> by vertical angles
2*angle x+40+angle d=180> 2*angle x=180-(40+70)
2*angle x=70> angle x=35
angle a=angle x> by vertical angles
angle a=35
angle c=angle x> by vertical angles
angle c=35
the answer part 3) is
angle a=35°
angle b=40°
angle c=35°
angle d=70°
Part 4)
angle a+70=90> are complementary angles
angle a=90-70> angle a=20
angle a+angle b=90> are complementary angles
angle b=90-angle a> 90-20> angle b=70
angle d=70 > by vertical angles
angle d+angle e=180> supplementary angles
angle e=180-angle d> angle e=180-70> angle e=110
angle a+angle b+angle c+angle d=180
angle c=180-(20+70+70)> angle c=20
the answer part 4) is
angle a=20°
angle b=70°
angle c=20°
angle d=70°
angle e=110°
Part 5)
angle a+90=180> supplementary angles
angle a=180-90> angle a=90
angle a +angle b=180> supplementary angles
angle b=180-angle a> angle b=180-90> angle b=90
angle e=132> by vertical angles
angle d+132=180> supplementary angles
angle d=180-132> angle d=48
angle c+138=180> supplementary angles
angle c=180-138> angle c=42
the answer part 5) is
angle a=90°
angle b=90°
angle c=42°
angle d=48°
angle e=132°
part 6)
angle a+110=180> supplementary angles
angle a=180-110> angle a=70
angle c=25> by vertical angles
angle b+100+25=180> angle b=180-(100+25)> angle b=55
the answer Part 6) is
angle a=70°
angle b=55°
angle c=25°
Ответ: