MATHS BLANKS [1 Marks Each]

If a transversal intersects a pair of lines in such a way that the sum of interior angles on the same side of the transversal is 180°, then the lines are ___________.

The angle measurement between two perpendicular lines is ___________.

Two angles are called a pair of ___________ angles if their arms form two pairs of opposite rays.

If a ___________ intersects two parallel lines, the alternate angles are equal.