Question

Plz provide all theorems from
Ch.6 Lines and angles...

Grade-9th.​

Answer 1

Answer:

This are all theorems

Please mark my answer as brainlist

Answer 2

Answer:

If a ray stands on a line, then the sum of the adjacent angles so formed is 180°.

If sum of two adjacent angles is 180°, then their non common arms of the angles form a line.

The sum of all angles around a Point is equal to 360°.

If two lines intersect each other, then the vertically opposite angles are equal

If a transversal intersects two parallel lines, then each pair of alternate interior angles is equal

If a transversal intersects two lines such that a pair of alternate interior angles is equal, the two lines are parallel.