Question

Hey@user

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Answer these two questions....

Answer 1

Hey here is your answer.................!!☺➡⬇⬅.

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19)☺⬇....!!


Here a transversal intersect the two lines. And interior angles are equal.

For, RS ll PQ, we have

=) THE SUM OF TWO INTERIOR ANGLES IS 180° .


A/Q

1) No it is not true that the given two lines is always parallel by co-interior angles.

Better explanation is in 2 answer.⬇☺

2) Hence, both the angles are given equal , it doesn't make any sense , if only their sum is 180° .


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18)➡:-)

GIVEN. : x = y and a = b.

To prove : r ll n.

Proof,_____⬇☺

Since, r and m are lines and p is the transversal.

=) ang. X = ang.Y. [ given]

But these are corresponding angles.

Therefore, r ll m. _____________(1)

Now ,.

m and n are line and q is transversal.

=) ang. A = ang. B. [ given ].

But these are corresponding angles.

Therefore, m ll n. _____________(2)


➡ From equation 1 and 2.

r ll m ll n

Since, R ll N. ________PROVED.☺





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