In the image, the marked angle is at point $P$ (the bottom left corner). To name the marked angle in two different ways, we can use both angle notation and three-letter naming conventions.

1. First way: Using the vertex only: The angle is located at point $P$. Therefore, one way to name the angle is simply $\angle P$.

2. Second way: Using three points: In this triangle, we can use the points around the angle. The angle at $P$ is formed by the lines $PS$ and $PQ$. Therefore, the angle can be named $\angle SPQ$, where $P$ is the vertex, and $S$ and $Q$ are points on the rays forming the angle.

Would you like further details or explanations?

Here are five related questions:

1. How do you name angles using three points?
2. What is the difference between a reflex angle and an acute angle?
3. How do you measure an angle using a protractor?
4. What is the relationship between the angles in a triangle?
5. How do you find the interior angles of polygons?

Tip: Always ensure that when naming angles using three points, the vertex (the corner of the angle) is listed in the middle.