Question

B are supplementary angles.
6. Lines l, and l, intersect at O. Find the value of x, y
and
2
2
40°
o
2 영​

Answer 1

Answer:

Given, x=45  

o

 

As per the diagram, two lines l  

1

​  

 & l  

2

​  

 intersected to form two pairs of vertically opposite angles.

x=z  -- (1)

u=y  --(2)

From (1)

x=z=45  

o

 .

We also know that the sum of all the angles around a point is 360  

o

 

x+u+z+y=360  

o

 

45+u+45+u=360  

o

 

90+2u=360  

o

 

2u=270  

o

 

u=135  

o

 

=>y=135  

o

 

∴ x=45  

o

,z=45  

o

,u=135  

o

 and y=135  

o

Explanation: