Similar PPT courseware 4 of the graphic "Parallel lines are proportional to their segments"

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Similar PPT courseware 4 of the graphic "Parallel lines are proportional to their segments"

Review the past and learn the new

(1) How to calculate the ratio of line segments?

(2) What does it mean that line segments AB, CD, EF, and GH are proportional?

(3) You can quickly divide a rope into two pieces without measuring, so that the two parts meet the following conditions:

The ratio of these two parts is 1:1?

The ratio of these two parts is 1:3?

The ratio of these two parts is 2:3?

Explore and learn, gain new knowledge

Self-learning

1. Learning content: All content on page 82 of the textbook.

2. Study time: about 5 minutes.

3. Study guidance: Group division of labor, cooperative learning and completion of activity 1 in the tutorial plan

Collaborative exploration (1)

1. Do you think the key word in the theorem is _______?

2. Do you have any good methods to share with your classmates when finding "corresponding line segments"?

Collaborative exploration (2)

Corollary: If a straight line parallel to one side of a triangle intersects the other two sides, the corresponding line segments intercepted are proportional

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For more information about the PPT courseware "Similarities of Proportional Figures of Parallel Lines Divided into Line Segments", please click the Similar ppt tag of Proportional Figures of Parallel Lines Divided into Line Segments.

"Parallel lines are proportional to their segments" PPT courseware:

"Parallel lines are proportional to their segments" PPT courseware 1. When two straight lines are intercepted by a set of parallel lines, the corresponding line segments intercepted are _________. 2. If a straight line parallel to one side of a triangle cuts the other two sides (or the extension lines of both sides), the corresponding line segment obtained is _________. 3． parallel..

Similar PPT courseware 3 of the graphic "Parallel lines are proportional to their segments":

"Parallel Lines Divide Line Segments into Proportions" Similar PPT Courseware for Graphics 3 Review Review 1. The concept of proportional line segments: Among the four line segments a, b, c, d, if a:b=c:d, then these four line segments a, b , c, and d are called proportional line segments, referred to as proportional line segments. 2. Ratio..

Similar PPT courseware 2 of the graphic "Parallel lines are proportional to their segments":

"Parallel Lines Divide Line Segments Are Proportional" Similar PPT Courseware of Figures 2 Learning Objectives 1. Understand the process of generating the basic fact that parallel lines divide line segments into proportions 2. Master the inference derived from parallel lines dividing line segments into proportion Facts and corollaries that line segments are proportional..

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Update Time: 2024-11-19

This template belongs to Mathematics courseware Beijing Normal University Ninth Grade First Volume Mathematics industry PPT template

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