The image contains the formula for calculating the distance between two points $A(x_1, y_1)$ and $B(x_2, y_2)$ on a Cartesian plane, labeled as "Jarak AB" which translates to "Distance AB." The formula is based on the Pythagorean theorem:

$AB = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

Here’s the breakdown:

• $x_1, y_1$ are the coordinates of point $A$.
• $x_2, y_2$ are the coordinates of point $B$.
• The formula gives the straight-line distance between the two points, often referred to as the Euclidean distance.

Would you like more details or have any questions?

Here are 5 related questions to further explore the concept:

1. How do we calculate the distance if one point is the origin $(0, 0)$?
2. How does this formula apply in 3D space, and what changes are needed?
3. What is the geometric meaning of the difference between the $x$ and $y$ coordinates?
4. Can this formula be used to determine the perimeter of a triangle with known vertices?
5. How would you apply this formula if the coordinates were in a different coordinate system (e.g., polar coordinates)?

Tip: This formula is fundamental in geometry and can be extended to higher dimensions by adding more terms for each additional dimension (e.g., 3D, 4D).