Math 6 Chapter 2 Lesson 4: When is angle xOy + angle yOz= angle xOz? 1. Summary of theory Tóm 1.1. When is the sum of the measures of two angles xOy and yOz equal to the measure of the angle xOz? If the ray Oy lies between the two rays Ox and Oz then \(\widehat {xOy}\,\, + \,\widehat {yOz\,}\, = \,\widehat {xOz}\) Conversely, if \(\widehat {xOy}\,\, … [Read more...] about Math 6 Chapter 2 Lesson 4: When is angle xOy + angle yOz= angle xOz?

# Grade 6 Math

## Math 6 Chapter 2 Lesson 3: Angle measure

Math 6 Chapter 2 Lesson 3: Angle measure 1. Summary of theory Tóm 1.1. Protractors - Each angle has a measure. The measure of a flat angle is \({180^0}\) - The measure of each angle does not exceed \({180^0}\) 1.2. Compare two angles We compare two angles by comparing their measures. - Two angles are congruent if their measures are … [Read more...] about Math 6 Chapter 2 Lesson 3: Angle measure

## Math 6 Chapter 2 Lesson 2: Angle

Math 6 Chapter 2 Lesson 2: Angle 1. Summary of theory Tóm - Corner is a figure consisting of two rays with a common origin. The common origin of two rays is called the vertex of the angle. The two rays are the two sides of the angle. - Sign: \(\widehat {xOy};\,\,\,\widehat {yOx};\,\,\,\widehat O\) - Flat angle is an angle whose sides are opposite … [Read more...] about Math 6 Chapter 2 Lesson 2: Angle

## Math 6 Chapter 2 Lesson 1: Half plane

Math 6 Chapter 2 Lesson 1: Half plane 1. Summary of theory Tóm 1.1. Half plane a) Flat surface - A table top, a table top, a spread sheet of paper... give us an image of the plane. - The plane is not constrained in all directions. b) Half plane - The figure consisting of the line a and the part of the plane divided by a is called the half plane of … [Read more...] about Math 6 Chapter 2 Lesson 1: Half plane

## Math 6 Chapter 1 Lesson 10: Midpoint of line segment

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