To find the middle point between two numbers, we can add them together and then divide by 2.

**e.g. The middle point between 4 and 7 is 4 + 7 = 11, 11 ÷ 2 = 5.5**

We can use the same method to find the **midpoint **(the middle) of a** line segment**.

A line segment is simply a **part of a line between two points**.

A line segment has a **beginning **and an **end**.

**e.g. Let's say we have a line segment between (1, 2) and (5, 6). What is the midpoint of this line segment?**

We need to find the middle between the x-coordinates and the y-coordinates.

Simply add the x-coordinates and divide by 2, then add the y-coordinates and divide by 2.

**x-coordinates:**

1 + 5 = 6

6 ÷ 2 = 3

**y-coordinates:**

2 + 6 = 8

8 ÷ 2 = 4

So the coordinates of the midpoint of this line segment are **(3, 4)**.

In this activity, we will find the midpoints of line segments with coordinates involving both numbers and algebra, or use our knowledge of midpoints to find missing end or starting points.