An angle is formed by two rays (called arms) sharing a common endpoint, the vertex. The measure of the angle quantifies the amount of rotation between these two rays.
Consider an angle $\theta$. Its measure is determined solely by the relative orientation of its two arms originating from the vertex.
Therefore, even if an arm of an angle is extended to double its length, the measure of the angle remains the same.
Correct Answer: Option 4, remains the same.
What is the sum of the angle complementary to $15^\circ$ and the angle supplementary to $125^\circ$?
In the given figure, AB is parallel to CD and RS is a transversal. Find the value of X.

Two parallel lines are intersected by a transversal, the corresponding angles are:
If l, m, n are lines such that, l is parallel to n and m is parallel to n, then, ______
There are three points P, Q and R on a straight line such that PQ : QR = 3 : 5. If n is the number of possible values of PQ : PR, then what is n equal to ?
Two cars start from a point at the same time and travel on two different roads at right angles to each other. Their speed is 18 km/h and 72 km/h respectively. What will be the distance between them after 6 seconds?
If angles of a triangle are in the ration of 2 : 3 : 4, then the measure of the smallest angle is: