Question

In Fig. lines l and m intersect each other at a point. Which of the following is false?​

Answer 1

Correct option is  

∠a=∠d

The two lines l and m shown in the figure forms 4 angles, a, b, c and d.

∠a and ∠b are vertically opposite angles.

Hence, ∠a=∠b.

Similarly, ∠c and ∠d are also vertically opposite angles.

Hence, ∠d=∠c.

Also, ∠a and ∠d form a linear pair.

Hence, ∠a+∠d=180  

o

 

Since ∠a+∠d=180  

o

, ∠a cannot be equal to ∠d, unless they are both right angles, which is not the case here.

Hence, option D is false here.

Answer 2

Answer:

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