"Perpendicular bisectors of line segments" PPT courseware 10

Description

"Perpendicular bisectors of line segments" PPT courseware 10

question

What is the definition of perpendicular bisector of a line segment?

Is the line segment an axially symmetrical figure?

How to make the perpendicular bisector of a line segment?

Definition method; Origami; Rule and compass drawing method

Rule and compass drawing

practice:

1. Take points A and B as the center of the circle and a length greater than 1/2AB as the radius, and draw arcs to intersect at points M and N;

2. Draw a straight line through points M and N.

Summary

a method

A new way to prove that line segments are equal: use the property of perpendicular bisectors of line segments.

two theorems

Points on the perpendicular bisector of a line segment are equidistant from both ends of the line segment.

Points equidistant from both ends of a line segment lie on the perpendicular bisector of the line segment.

Three kinds of drawing

Origami; drawing a vertical line through the midpoint; drawing with ruler and compass

Operation

1. Must-do homework:

(1) Textbook: P 124 Exercise 16.2 Questions 3 and 4

2. Optional homework: Qingdao International Sailing Center needs to build a public service facility so that it is equidistant from the three athletes' apartments A, B, and C.

If the locations of the three athletes' apartments A, B, and C are as shown in the picture, please determine the location of the public service facility P in the picture;

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For more information about the PPT courseware "Perpendicular Bisectors of Line Segments", please click on the Perpendicular Bisectors of Line Segments ppt tab.

"Perpendicular bisectors of line segments" PPT courseware 9:

"Perpendicular Bisector of a Line Segment" PPT Courseware 9 Learning Objectives 1. Be able to use the ruler and compass method to draw a perpendicular bisector of a known line segment, and be able to prove its correctness. 2. Experience the process of exploration, prove the property theorem of perpendicular bisectors of line segments and its inverse theorem, and further develop...

"Perpendicular bisectors of line segments" PPT courseware 8:

"Perpendicular Bisectors of Line Segments" PPT Courseware 8 Teaching Objectives 1. Be able to tell the theorem and converse theorem of perpendicular bisectors of line segments, and be able to use these two theorems differently. 2. Understand the application of mathematics learning methods, observation, generalization, verification, comparison, etc. in this lesson. 3..

"Perpendicular bisectors of line segments" PPT courseware 7:

"Perpendicular Bisector of a Line Segment" PPT Courseware 7 Questions: 1. Is a line segment an axially symmetrical figure? If it is the axis of symmetry, what is it? 2.What is the perpendicular bisector of a line segment? 3. How to make the perpendicular bisector of a line segment? Thinking: Is there any other way to determine the line segment?

File Info

Update Time: 2024-11-16

This template belongs to Mathematics courseware Hebei Education Edition Eighth Grade Mathematics Volume 1 industry PPT template

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