| Category | Format | Size |
|---|---|---|
| Beijing Normal University seventh grade first volume mathematics | pptx | 6 MB |
"Comparison of Angles" Basic Plane Graphics PPT Courseware 2
Description
"Comparison of Angles" Basic Plane Graphics PPT Courseware 2
Observe and think:
① What details must be paid attention to when comparing angle sizes using the superposition method?
②Is the size of the angle related to the length of the drawn parts on both sides?
Based on the figure below, solve the following problems:
(1) Compare the sizes of ∠AOB, ∠AOC, ∠AOD, and ∠AOE, and point out the acute angle, right angle, obtuse angle, and straight angle among them.
(2) Write two equivalent relationships between certain angles in ∠AOB, ∠AOC, ∠BOC, and ∠AOE.
(3) Use a triangle ruler to estimate the degrees of each angle in the figure.
Give it a try:
A set of triangles consists of an isosceles right triangle and a right triangle with 300 angles. There are many ways to use this set of triangles to form a 150-angle triangle. Please draw two schematic diagrams of different compositions, and make necessary annotations on the diagrams without writing the method.
Think about it:
What angles of different degrees can be drawn using a set of triangles?
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For more information about the "Comparison of Angles Basic Plane Figures" PPT courseware, please click the Comparison of Angles ppt Basic Plane Figures ppt tag.
"Comparison of Angles" PPT Courseware 3:
"Comparison of Angles" PPT Courseware 3 Learning Objectives: 1. Learn to use the superposition method to compare the sizes of angles. 2. Know the relationship between the sum, difference, times and minutes of angles, and be able to express them in geometric language. 3. Know the bisectors of angles. The definition of , and can be expressed in geometric language. 1. Do you still remember? ..
"Comparison of Angles" PPT Courseware 2:
"Comparison of Angles" PPT Courseware 2 Teaching Objectives: 1. Compare the sizes of angles based on figures 2. Understand the concept of the sum and difference of angles 3. Master the concept of angle bisectors 1. Superposition method (starting from shape) (1) Known ABC and DEF are as shown in the figure: 2. Measurement method (starting from numbers) The magnitude of the angle...
"Comparison of Angles" PPT courseware:
"Comparison of Angles" PPT courseware learning objectives: 1. Learn to use the superposition method to compare the sizes of angles. 2. Know the relationship between the sum, difference, times and minutes of angles, and be able to express them in geometric language. 3. Know the bisectors of angles Definition, and can express it in geometric language. 1. Do you still remember? ..
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Update Time: 2024-08-01
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