"Understanding of Angles" PPT courseware

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"Understanding of Angles" PPT courseware

A line segment is straight, it has two endpoints, and its length is finite.

Extend one end of the line segment infinitely to get a ray.

A ray is also a straight line, it has an endpoint and is infinitely long.

What do you already know about horns? Self-study textbook example 2, what knowledge have you learned about angles?

Angle is usually represented by the symbol " ". The corner in the above figure can be marked as "1". "1" is pronounced as "jiaoyi".

Is the following statement correct?

Please tell me your reasons.

(1) A ray has only one endpoint, a straight line has no endpoints, and a line segment has two endpoints.

(2) Xiao Ming drew a ray 5 cm long.

Keywords: Courseware for understanding angles, download PPT courseware for fourth-grade mathematics volume 1 of Jiangsu Education Edition, download courseware for fourth-grade mathematics slides, download PPT courseware for understanding angles, .PPT format;

For more information about the "Knowledge of Jiaojiao" PPT courseware, please click the "Knowledge of Jiaojiao" ppt tag.

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"Understanding and Measurement of Angles" Lines and Angle PPT Courseware Teaching Objectives 1. Experience the process of finding and understanding angles from specific things, and using existing experience and measurement methods to compare the sizes of two angles. 2. Recognize the symbols representing angles, be able to read and write angles, and be able to use a protractor to measure specified...

"Understanding of Angles" PPT Courseware 2:

"Understanding of Angles" PPT Courseware 2 1. Fill in the blanks. 1. An angle has ( ) vertices and ( ) sides. 2. There are ( ) angles in a triangular plate, of which ( ) angles are right angles. 3. A rectangle has ( ) angles, and ( ) angles are right angles. ..

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Update Time: 2024-11-18

This template belongs to Mathematics courseware Jiangsu Education Edition Fourth Grade Mathematics Volume 1 industry PPT template

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