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mart [117]
3 years ago
12

Could anyone help me

Mathematics
1 answer:
Sati [7]3 years ago
8 0

Answer:

1)m\angle 7 =65\°  

2)m\angle 4=115\°

3)m\angle 6=115\°

4)m\angle 1=65\°

5)m\angle 16=60\°

6)m\angle 18=60\°

7)m\angle 21=120\°

8)m\angle 10=55\°

9)m\angle 11=125\°

10) m\angle 12=55\°

Step-by-step explanation:

Given:

e\parallel m and p\ and\ q are traversals.

m\angle 3=65\°

m\angle 15 =120\°

1) m\angle 7 = m\angle 3 =65\°       [corresponding angles]

2)m\angle 4= 180\°-m\angle 3 =180\°-65\°=115\° [As m\angle 4+m\angle 3=180\° forming a linear pair]

3)m\angle 6 = m\angle 4 =115\°  [alternate exterior angles]

4)m\angle 1 = m\angle 3 =65\° [vertical angles]

5)m\angle 16= 180\°-m\angle 15 =180\°-120\°=60\° [As m\angle 15+m\angle 16=180\° forming a linear pair]

6)m\angle 18 = m\angle 16 =60\° [alternate interior angles]

7)m\angle 21 = m\angle 15 =120\°  [alternate exterior angles]

m\angle 14 = m\angle 16 =60\° [vertical angles]

m\angle 12+m\angle 7+m\angle 14=180\° [Angle sum of triangle=180°]

m\angle 12=180\°-65\°-60\°=55\°[Plugging angle values in the above relation and solving for m\angle 12

8) m\angle 10 = m\angle 12 =55\° [Vertical angles]

9)m\angle 11= 180\°-m\angle 10 =180\°-55\°=125\° [As m\angle 11+m\angle 10=180\° forming a linear pair]

10) m\angle 12 = m\angle 10 =55\° [Vertical angles]

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