Math 6 Chapter 1 Lesson 10: Midpoint of line segment 1. Theory The midpoint of line segment AB is the point M on that line and is equidistant from two points A and B. We have: M is the midpoint of line segment AB \( \Leftrightarrow \left\{ \begin{array}{l}M \in AB\\MA = MB\end{array} \right.\) Or M is midpoint of line segment AB \( \Leftrightarrow … [Read more...] about Math 6 Chapter 1 Lesson 10: Midpoint of line segment

# Straight Section

## Math 6 Chapter 1 Lesson 9: Draw a line showing the length

Math 6 Chapter 1 Lesson 9: Draw a line showing the length 1. Summary of theory Tóm 1.1. Draw a line on the ray Example 1: On the Ox ray, draw a line segment OM of length 2cm. Solution guide: How to draw: Known sucker O. We draw the node M as follows: Place the edge of the ruler on the Ox ray so that the zero line of the ruler coincides with the … [Read more...] about Math 6 Chapter 1 Lesson 9: Draw a line showing the length

## Math 6 Chapter 1 Lesson 8: When is AM + MB = AB?

Math 6 Chapter 1 Lesson 8: When is AM + MB = AB? 1. Summary of theory Tóm If point M lies between two points A and B then AM + MB = AB. Conversely, if AM + MB = AB, then point M lies between two points A and B. 2. Illustrated exercise Question 1: Let M points lie between A and B. Know AM = 3cm, AB = 8cm. Calculate MB. Solution guide: Since M lies … [Read more...] about Math 6 Chapter 1 Lesson 8: When is AM + MB = AB?

## Math 6 Chapter 1 Lesson 7: Length of line segment

Math 6 Chapter 1 Lesson 7: Length of line segment 1. Summary of theory Tóm 1.1. Line length Each line segment has a length. The length of the line segment is a number greater than 0. 1.2. Compare two line segments We can compare two line segments by comparing their lengths. Suppose we have: AB = 3cm, CD = 3cm, EG = 4cm I say: Two line … [Read more...] about Math 6 Chapter 1 Lesson 7: Length of line segment

## Math 6 Chapter 1 Lesson 6: Line segment

Math 6 Chapter 1 Lesson 6: Line segment 1. Summary of theory Tóm 1.1. Straight line The figure consisting of any two points A, B and all points lying between two points A and B is called the line segment AB. 1.2. Line length Each line segment has a specified length, greater than 0. If two points coincide, then we say that the distance … [Read more...] about Math 6 Chapter 1 Lesson 6: Line segment

## Math 6 Chapter 1 Lesson 5: Tia

Math 6 Chapter 1 Lesson 5: Tia 1. Summary of theory Tóm 1.1. Ray The figure consisting of a point O and a part of the line divided by the point O is called a ray of origin O (also known as a half-line of origin O). 1.2. Two rays opposite each other Two rays with common origin Ox and Oy forming a line xy are called opposite rays. Comment: Each … [Read more...] about Math 6 Chapter 1 Lesson 5: Tia

## Math 6 Chapter 1 Lesson 4: Practice Planting trees in a straight line

Math 6 Chapter 1 Lesson 4: Practice Planting trees in a straight line 4 Lesson 4: Practice planting trees in a straight line. ============= … [Read more...] about Math 6 Chapter 1 Lesson 4: Practice Planting trees in a straight line

## Math 6 Chapter 1 Lesson 3: Line passing through two points

Math 6 Chapter 1 Lesson 3: Line passing through two points 1. Summary of theory Tóm 1.1. Draw a line To draw a line passing through two points A and B we do the following: - Place the edge of the ruler passing through two points A and B - Use a pencil to trace along the edge of the ruler Comment: There is a straight line and only one line passing … [Read more...] about Math 6 Chapter 1 Lesson 3: Line passing through two points

## Math 6 Chapter 1 Lesson 2: Three points in line

Math 6 Chapter 1 Lesson 2: Three points in line 1. Summary of theory Tóm 1.1. What are three collinear points? When three points A, C, and D are on the same line, we say they are collinear. When three points A, B, and C are not on the same line, we say they are not collinear. 1.2. Relationship between three collinear points With three … [Read more...] about Math 6 Chapter 1 Lesson 2: Three points in line

## Math 6 Chapter 1 Lesson 1: Score. Straight line

Math 6 Chapter 1 Lesson 1: Score. Straight line 1. Summary of theory Tóm 1.1. Point The little dot on the page is an image of the point. People use capital letters A, B, C... to name points. 1.2. Straight line With a pen and a ruler, we can draw a straight line. We use straight lines to represent a straight line. People use lowercase letters … [Read more...] about Math 6 Chapter 1 Lesson 1: Score. Straight line