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Agata [3.3K]
3 years ago
12

Find the values of the unknown angles marked with letters. 50 points!!!!!!!

Mathematics
2 answers:
Romashka [77]3 years ago
4 0
  • a=115°(Alternate interior angles)
  • b=70°(Alternate interior angles

C:-

\\ \sf\longmapsto c+115=180

\\ \sf\longmapsto c=180-115

\\ \sf\longmapsto c=65°

D:-

\\ \sf\longmapsto d+70=180

\\ \sf\longmapsto d=180-70

\\ \sf\longmapsto d=110°

IceJOKER [234]3 years ago
3 0

Answer:

  • a = 115°, alternate interior angles are congruent
  • b = 70°, same as above
  • c = 180° - 115° = 65°, angles forming a straight angle are supplementary
  • d = 180° - 70° = 110°, same as above

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x

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y

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x

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y

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3

x

−

2

y

−

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(

x

1

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y

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and

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is

y

−

y

1

=

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x

−

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−

2

y

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We know that,

the slope of the line  

a

x

+

b

y

+

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=

0

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m

=

−

a

b

∴

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x

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3

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(

x

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y

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into the partial equation

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b

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b

=

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x

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2

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the equation of a line in  

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x

y

=

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x

+

b

where m is the slope and b the y-intercept

rearrange  

2

x

+

3

y

=

9

into this form

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3

y

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x

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⇒

y

=

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3

x

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