Question

To verify the sum of co-interior angles of parallelogram is 180°.​

Answer 1

Answer:

no, 180 is sum of all angles of triangle

Answer 2

To prove.:-

<A+< B =180°

Prove:-

We. know that the two pair of opposite sides of parallelogram are equal.

So,

AB || DC and BC is transversal .

<B + <C = 180° ----(1)

<C = <A { because opposite angle of parallelogram are equal} ----(2)

Then,

Put equation 2 in equation 1

<B + <A =180° { beacuse <c = <A}

Hence proved,

<B+ <A =180°