Segment Addition and Line Segments

Mr. Buffington introduces line segments, explaining that they are parts of lines with defined endpoints. He discusses congruent line segments, showing how to identify them using markings. The segment addition postulate is introduced, which states that the sum of two segments equals the total length if a point lies between them. Examples are provided to illustrate these concepts, and students are encouraged to draw diagrams to better understand and solve related problems.

What is a line segment?

• A line that extends infinitely in one direction

• A line that is always horizontal

• A part of a line with two endpoints

• A line that curves between two points

How do line segments differ from lines?

• Lines are always straight

• Line segments are always curved

• Lines are always longer than line segments

• Line segments have endpoints; lines do not

What does it mean for two line segments to be congruent?

• They have the same length

• They are parallel

• They intersect at a point

• They are perpendicular

How can you visually indicate that two line segments are congruent?

• By coloring them the same

• By making them perpendicular

• By drawing the same number of lines through them

• By making them parallel

If line segment AB is congruent to line segment CD, what can be said about their lengths?

• AB and CD have the same length

• AB and CD are perpendicular

• AB is shorter than CD

• AB is longer than CD

What is the segment addition postulate?

• The sum of two line segments is always greater than either segment

• The sum of the lengths of two segments equals the length of the combined segment

• The difference between two segments is always positive

• The product of two segments is equal to the area of a rectangle

According to the segment addition postulate, if AB + BC = AC, what can be inferred?

• B is between A and C

• C is between A and B

• B is not between A and C

• A is between B and C

In the segment addition postulate, what is the relationship between AB, BC, and AC?

• AB * BC = AC

• AB - BC = AC

• AB + BC = AC

• AB / BC = AC

If GH is 3 cm and HI is 4 cm, what is the length of GI?

• 6 cm

• 7 cm

• 8 cm

• 9 cm

In the example problem, what is the total length of GI if GH is 3 and HI is 4?

• 5

• 8

• 6

• 7