"Measurement of Angles" Lines and Angle PPT Courseware

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"Measurement of Angles" Lines and Angle PPT Courseware

Think about it and discuss it.

Divide the circle into 360 equal parts, and the size of the angle subtended by one part is called 1 degree. 1° is usually used as the unit for measuring angles.

1 circumferential angle = 360°, 1 straight angle = 180°, 1 right angle = 90°

1. Count, talk, and compare the sizes of ∠1, ∠2, and ∠3 below.

2. Estimate how many degrees the angle below is?

3. (1) Can you mark the angles of 30°, 60°, 90°, 120°, 180°, and 270° on the picture?

(2) Can you find two 50° angles on the picture? Mark one mark.

(3) Use the picture in the attachment to cut out the corners you want.

4. Fold a round piece of paper in half three times. Think about it and fill it out.

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For more information about the "Measurement of Lines and Angle Angle" PPT courseware, please click on the "Measurement of Lines and Angle ppt ppt" tag.

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Update Time: 2024-09-25

This template belongs to Mathematics courseware Beijing Normal University Fourth Grade Mathematics Volume 1 industry PPT template

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