1.

Please keep me sums​

Answer»

GIVEN :-

• Two parallel lines INTERSECT at ΔA

• Angle A = 50°

Solution :-

Here,

We know the VALUE of angle A = 50°

In the given figure,

Angle C is vertically opposite angle of Angle A.

As we know that,

Vertically opposite angles are equal.

Therefore,

Angle A = Angle C = 50°

Now,

Angle C and Angle B are linear PAIR.

[ Linear pair is the pair of adjacent angles which formed by the intersection of two lines ]

As we know that,

Sum of linear pair = 180°

Therefore,

Angle B + Angle C = 180°

Angle B + 50° = 180°

Angle B = 180° - 50°

Angle B = 130°

Here,

Angle D is vertically opposite angle of Angle B

Therefore,

Angle B = Angle D = 130°

Hence, The FOUR angles are. Angle A = 50° , Angle B = 130° , Angle C = 50° , Angle D = 130° .


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