Series 1: playing of 5
exterior angles, interior angles, consecutive interior or allied angles or co-interior angles
In the below fig, l, m and n are parallel lines intersected by transversal p at X, Y and Z
respectively. Find ∠1, ∠2 and ∠3.
In the below fig, p is a transversal to lines m and n,`∠`2 = 120° and `a∠`5 = 60°. Prove that m || n.
In the below fig, lines AB and CD are parallel and P is any point as shown in the figure.
Show that` ∠`ABP +` ∠`CDP = ∠DPB.
In the below fig, arms BA and BC of `∠`ABC are respectively parallel to arms ED and EF of
`∠`DEF. Prove that `∠`ABC = ∠DEF.
If two straight lines are perpendicular to the same line, prove that they are parallel to each
Fill in the blank in the following to make the statement true:
If a transversal intersects a pair of lines in such a way that a pair of alternate angles
are equal, then the lines are _______