Lines and Angles

In $\angle ABC$, the arms are:

A line segment $PQ$ is same as the line segment:

If two lines intersect each other, then the ________ angles are equal.

If a line $l$ is perpendicular to line $m$, and line $n$ is parallel to $m$, then the angle between $l$ and $n$ is:

If $\angle A + \angle B = 180^\circ$, then $\angle A$ and $\angle B$ are:

The angle between the bisectors of two vertically opposite angles is:

If an angle is $1/9$ of its supplement, what is the measure of the angle?

If $\angle 1$ and $\angle 2$ are vertically opposite angles, then which of the following is always true?

Two angles are such that the difference between them is $50^\circ$ and they form a linear pair. Find the angles.

If $l \parallel m$, which of the following pairs are always equal?

Two lines $m$ and $n$ are parallel. If $\angle 1 = 65^\circ$ is an exterior angle, what is the measure of the exterior angle on the same side of the transversal?

If $l \parallel m$ and the transversal is $t$, and one of the angles is $90^\circ$, then all other 7 angles are:

If $p \parallel q$ and $r \parallel q$, then the alternate exterior angles on $p$ and $r$ with respect to a transversal are:

If $L_1, L_2, L_3$ are three lines such that $L_1 \parallel L_2$ and $L_2 \parallel L_3$, then the number of pairs of parallel lines is:

Two lines $m$ and $n$ are parallel to a line $p$. If $m$ and $n$ were to intersect, which of the following would be violated?

In $\triangle ABC$, if $\angle A = 52^\circ$ and $\angle B = 68^\circ$, find the measure of $\angle C$.

If the angles of a triangle are $x^\circ$, $(2x-5)^\circ$, and $(3x+5)^\circ$, find the value of $x$.

The angles of a triangle are in the ratio $1:1:2$. Find the measure of the largest angle.