Segment Addition Postulate Explained

The video tutorial covers the segment addition postulate, explaining how a line segment can be divided into smaller segments. It provides multiple examples to demonstrate how to calculate unknown segment lengths using given values. The tutorial emphasizes the importance of showing work to receive full credit and uses various examples with different letters to illustrate the concept.

What is the Segment Addition Postulate?

• A postulate stating that a segment can be divided into four equal parts.

• A postulate stating that the sum of the lengths of two segments equals the length of the entire segment.

• A postulate stating that the sum of the lengths of two segments equals the length of the longer segment.

• A postulate stating that a segment can be divided into three equal parts.

If you have three points A, B, and C on a line, which point is always in the middle?

• Any point can be in the middle

• B

• C

• A

What happens when you place a point in the middle of a segment?

• It does not change the segment.

• It creates three smaller segments.

• It creates a new segment parallel to the original.

• It creates two smaller segments.

In the first example, what is the length of segment RS if ST is 18 and RT is 100?

• 82

• 100

• 18

• 118

In the first example, what is the length of segment ST?

• 18

• 118

• 82

• 100

In the second example, what is the length of segment FG if EF is 79 and EG is 139?

• 79

• 218

• 139

• 60

In the second example, what is the length of segment EF?

• 139

• 79

• 60

• 218

In the third example, what is the length of segment DE if EF is 30 and DF is 97?

• 97

• 30

• 127

• 67

In the third example, what is the length of segment EF?

• 67

• 30

• 97

• 127

In the third example, what is the length of segment CD if BC is 36 and BD is 129?

• 129

• 165

• 36

• 93