"Plane Cartesian Coordinate System" Position and Coordinates PPT (Lesson 1)

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"Plane Cartesian Coordinate System" Position and Coordinates PPT (Lesson 1)

Part One: Introduction of New Courses

The following is a schematic diagram of tourist attractions in a certain city. How can Xiaoliang, who is at the University of Science and Technology, introduce the locations of several scenic spots in the city to his visiting friends?

Students, do you like traveling? If you travel to a certain city, how should you determine the location of tourist attractions?

Plane Cartesian Coordinate System PPT, Part 2: New Knowledge Exploration

(1) Xiaohong drew squares and numbers on the tourist map, as shown in the picture, and used (0, 0) to represent the location of the University of Science and Technology, and (5, 7) to represent the location of the central square, then the bell tower How is the position expressed? (3,5) represents the location of which location? What about (5,2)?

Bell Tower (3,8); (3,5) means Dacheng Hall; (5,2) means Yingyue Lake

According to Xiaohong’s method, the 2 in (5, 2) means _________, and the 2 in (2, 5) means _________.

(2) If Xiaoliang and his friends are in the central square, and take the central square as the "origin" and make a mark as shown in the picture, can you express the location of the "Forest of Steles"? Where is the location of "Dacheng Hall"?

Forest of Steles (3,1) Dacheng Hall (-2,-2)

In a plane, two mutually perpendicular number axes with a common origin form a plane rectangular coordinate system (referred to as a rectangular coordinate system).

Positive direction: The direction of the number axis to the right and upward.

Coordinate axis: x-axis or horizontal axis: horizontal number axis.

y-axis or vertical axis: vertical number axis.

Origin: the common origin O of the two number axes.

Plane Cartesian Coordinate System PPT, Part 3: Consolidation Exercises

1. If the coordinates of point P are (-1,2), then the abscissa of point P is ______ and the ordinate is ______.

2. If the coordinates of point Q are (2,-3), then the abscissa of point Q is ____________ and the ordinate is ______.

3. If the abscissa of point M is -2 and the ordinate is -1, then the coordinates of point M are ______.

Plane Cartesian Coordinate System PPT, Part 4: Class Summary

In a plane, two number axes that are perpendicular to each other and have a common origin form a plane rectangular coordinate system.

Usually, the two number axes are placed in the horizontal position and the vertical position respectively, and the right and upward directions are respectively the positive directions of the two number axes. The horizontal number axis is called the x-axis or the horizontal axis, and the vertical number axis is called the y-axis or The vertical axis, x-axis and y-axis are collectively called the coordinate axes, and their common origin O is called the origin of the rectangular coordinate system.

Plane Cartesian Coordinate System PPT, Part 5: Classroom Quiz

1. As shown in the figure, write the coordinates of points A, B, C, D, E, F and G respectively.

Solution: A(-1,-1),

B(0,-3),

C(2,-5),

D(4,-1),

E(3,2),

F(-2,3),

G(2,-2).

2. Indicate the quadrant or coordinate axis where the following points are located

A(-1,-2.5) is in_______; B(3,-4) is in_______;

C(-5,5) is in ________; D(7,9) is in ________;

E(-5,0) is in_______; F(0,-3) is in_______;

G(7.1,0) is in_______; H(0,10) is in_______;

3. If point B (m+4, m-1) is on the x-axis, then m=______the coordinates of point B are__________.

4. If point C(x,y) satisfies x+y<0, xy>0, then point C is in the _____ quadrant.

5. If there is a point N(a,b) on the coordinate plane, where ab=0, then the position of point N is ( )

A is at the origin B. On the X-axis

C. On the Y axis D. On the coordinate axis

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"Plane Cartesian Coordinate System" Position and Coordinate PPT Courseware (Lesson 2):

"Plane Cartesian Coordinate System" Position and Coordinates PPT Courseware (Lesson 2) Part One: Knowledge Points Basic Knowledge Point 1 Establish an appropriate plane Cartesian coordinate system to find the coordinates of a point 1. As shown in the figure, there is an isosceles triangle ABC. Now we need to establish a plane Find the vertices of the rectangular coordinate system..

"Plane Cartesian Coordinate System" Position and Coordinate PPT Courseware (Lesson 1):

"Plane Cartesian Coordinate System" Position and Coordinate PPT Courseware (Lesson 1) Part One: Knowledge Points Basic Knowledge Point 1 Plane Cartesian Coordinate System and Related Concepts 1. In the plane Cartesian Coordinate System, point A (3-2) is at (D) A. The first quadrant B. The second quadrant C...

"Plane Cartesian Coordinate System" Position and Coordinates PPT (Lesson 3):

"Plane Cartesian Coordinate System" Position and Coordinate PPT (Lesson 3) Part One: Introduction of New Lesson (1) How to establish a plane Cartesian coordinate system? Answer: (1) Establish the origin O; (2) The right direction through the point O is the positive direction, and establish a number axis at the horizontal position called the x-axis or the horizontal axis; (3)..

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Update Time: 2024-11-18

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