"Vertical" Basic Plane Graphics PPT Courseware

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"Vertical" Basic Plane Graphics PPT Courseware

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"Vertical" Basic Plane Graphics PPT Courseware

vertical definition

Perpendicular: If two straight lines intersect at right angles, then the two straight lines are perpendicular to each other.

Note: Two line segments are perpendicular to each other means that the straight lines where the two line segments are located are perpendicular to each other.

Draw vertical lines by hand

1. Can you use a triangle ruler to draw two mutually perpendicular straight lines?

2. How to determine whether the two straight lines you drew are perpendicular to each other?

3. Can you use a rectangular piece of paper to fold two creases so that they are vertical?

The distance between the vertical line segment and the point and the straight line

Think about it: In the following two figures, can you draw the vertical line l through point A respectively? How many lines can you make in each picture?

Property: In the plane, there is and is only one straight line perpendicular to the known straight line through a point.

Vertical representation

Line AB is perpendicular to line CD, denoted as AB⊥CD at point O

If l and m are used to represent these two straight lines, then the straight line l is perpendicular to m, denoted as l⊥ m at point O

The intersection of two mutually perpendicular straight lines is called the vertical foot (point o in the figure).

Supplementary exercises

1. As shown in the figure, point C on straight line AB leads to two rays CE and CD through point C, and ∠ACE=31° and ∠DCB=59°. What is the positional relationship between CE and CD? Why?

2. As shown in the picture, please use triangles, rulers, pencils, scissors and other tools to cut the quadrilateral cardboard ABCD into a rectangular cardboard.

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For more information about the "Vertical Basic Plane Figures" PPT courseware, please click on the Vertical ppt Basic Plane Figures ppt tab.

"Composition and Vertical Stratification of the Atmosphere" PPT download of the atmosphere on Earth:

"The Composition and Vertical Stratification of the Atmosphere" The Earth's Atmosphere PPT Download Part One: Explanation of the Course Standards 1. Combined with chart materials, explain the main composition and functions of the atmosphere. 2. Use the schematic diagram of the vertical stratification of the atmosphere to analyze the stratification and characteristics of the atmosphere in the vertical direction. ..

"Composition and Vertical Stratification of the Atmosphere" Atmosphere on Earth PPT courseware:

"The Composition and Vertical Stratification of the Atmosphere" The Earth's Atmosphere PPT Courseware Part One Content: Learning Objectives: 1. Use chart information to explain the composition and vertical stratification of the atmosphere. 2. Use examples to explain the relationship between the composition and vertical stratification of the atmosphere and production and life. .....

"Composition and Vertical Stratification of the Atmosphere" Atmosphere on Earth PPT:

"The Composition and Vertical Stratification of the Atmosphere" The Earth's Atmosphere PPT Part One Content: The Composition and Function of the Atmosphere The Earth's Atmosphere Body Armor Parasol Insulation Changes in the Ratio of Atmospheric Components Due to Human Activities: Mainly Shown as the C02 Ratio increase..

File Info

Update Time: 2024-11-22

This template belongs to Mathematics courseware Beijing Normal University seventh grade first volume mathematics industry PPT template

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《垂直》基本平面图形PPT课件
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