| Category | Format | Size |
|---|---|---|
| Beijing Normal University Ninth Grade First Volume Mathematics | pptx | 6 MB |
"Properties and Judgment of Squares" Special Parallelogram PPT Courseware 3
Description
"Properties and Judgment of Squares" Special Parallelogram PPT Courseware 3
Cooperative learning
The second type of figure is the square. We give the definition: a set of rectangles with equal adjacent sides is called a square.
Discuss:
(1) Is a square a rhombus?
(2) What properties do you think a square has?
So we get two theorems about squares:
Theorem: The four angles of a square are all right angles and all four sides are equal.
Theorem The diagonals of a square are equal and bisect each other perpendicularly
Discuss:
Are parallelograms, rhombuses, rectangles, and squares related to each other? Can you visually represent the relationship between them in a way that you like? Communicate with peers.
Practice to improve
1: As shown in the figure, in the square ABCD, the diagonals AC and BD intersect at point O. How many isosceles triangles are there in the figure?
2: As shown in the figure, in the square ABCD, point F is a point on the diagonal AC, connecting BF and DF. Can you find the congruent triangles in the picture? Choose one pair to prove.
Class summary
1: Properties of squares: including sides, angles, diagonals and symmetry.
2: Connect parallelograms, rectangles, rhombuses, and squares.
3: Establish a knowledge structure that suits you and internalize it as part of your mathematical quality.
Keywords: Special parallelogram teaching courseware, Properties and determination of squares teaching courseware, Beijing Normal University edition ninth grade mathematics volume 1 PPT courseware, Ninth grade mathematics slide courseware download, Special parallelogram PPT courseware download, Properties and determination of square PPT courseware Download, .ppt format
For more information about the "Properties and Determination of Special Parallelogram Squares" PPT courseware, please click on the "Properties and Determination of Special Parallelograms ppt Squares" ppt tag.
"Properties and Judgment of Squares" Special Parallelogram PPT Courseware 4:
"Properties and Determination of Squares" Special Parallelogram PPT Courseware 4 Scenario introduction Determination theorem of squares: 1. A rhombus with equal diagonals is a square. 2. A rectangle with vertical diagonals is a square. 3. A rhombus with one right angle is a square. Guess the result...
"Properties and Judgment of Squares" Special Parallelogram PPT Courseware 2:
"Properties and Judgment of Squares" Special Parallelogram PPT Courseware 2 Learning Objectives: Knowledge and Skills: Know how to determine squares, and be able to use the determination conditions of parallelograms, rectangles, rhombuses, and squares to make relevant arguments and calculations. Process and methods..
"Properties and Judgment of Squares" Special Parallelogram PPT Courseware:
"Properties and Determination of Squares" Special Parallelogram PPT Courseware Definition: A set of parallelograms with equal adjacent sides and one right angle is called a square. What kind of quadrilateral do you think is a square? (What are the methods to determine whether a quadrilateral is a square? ?..
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Update Time: 2024-07-01
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