| Category | Format | Size |
|---|---|---|
| People's Education Press Seventh Grade Mathematics Volume 1 | pptx | 6 MB |
"Line, Ray, Line Segment" Preliminary PPT courseware for graphic understanding
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"Line, Ray, Line Segment" Preliminary PPT courseware for graphic understanding
Application of two points determining a straight line:
When planting trees, you only need to determine the positions of two tree pits to determine the straight line where the tree pits in the same row are located.
When building a wall, construction workers often insert a wooden stake at the two bases of the wall, and then draw a straight reference line to determine a straight line based on two points.
A point is on a straight line, and it can also be said that the straight line passes through the point.
A point is outside a straight line, which means the straight line does not pass through this point.
When two different straight lines have a common point, we say that the two straight lines intersect, and this common point is called their intersection point.
⑴A ray can be obtained by extending the line segment infinitely in one direction;
⑵A straight line can be obtained by extending the line segment in two directions.
⑶Line segments and rays are both part of a straight line.
(1) When expressing line segments, rays and straight lines, "line segment", "ray" and "straight line" must be indicated before the letters.
(2) When two capital letters are used to represent a straight line or line segment, the two letters can exchange positions. The two capital letters representing a ray cannot exchange positions. The endpoint letter must be placed in front.
Read the following sentences and draw the shapes:
(1) The straight line passes through three points A, B, and C, and point C is between points A and B;
(2) Two line segments m and n intersect at point P;
(3) p is a point outside the straight line. There is a straight line b passing through the point p and intersecting the straight line a at point Q;
(4) Straight lines l, m, and n intersect at point Q.
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For more information about the PPT courseware "Preliminary Understanding of Graphics Straight Line Segments", please click the "Preliminary Graphic Understanding ppt Straight Line Segments ppt" tag.
"Line, Ray, Line Segment" Preliminary Graphic Understanding PPT Courseware 3:
"Straight lines, rays, line segments" Preliminary PPT courseware for graphic understanding 3 Plane graphics are graphics composed of points and lines in the same plane Line segments, rays, straight lines 1. What is a line segment? How to draw a line segment? How to represent a line segment? 2. Ray What about? 3. What about straight lines? Representation of line segments..
"Line, Ray, Line Segment" Preliminary PPT Courseware for Graphic Understanding 2:
"Line, Ray, Line Segment" Preliminary Understanding of Graphics PPT Courseware 2 Preliminary Understanding of Graphics (1) How many straight lines can be drawn through point A? (2) How many straight lines can be drawn through two points A and B? We can represent a straight line in the following ways: Representation: ① Use two uppercase English words..
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Update Time: 2024-06-28
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