"Measurement of Angles" Preliminary PPT courseware for graphic understanding

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"Measurement of Angles" Preliminary PPT courseware for graphic understanding

measure of angle

1. Angle measurement units and their conversions

2. Be able to tell the definitions of right angles, acute angles and obtuse angles.

3. Be able to classify angles smaller than a straight angle; be able to use geometric language and symbols to express right angles.

4. Be able to correctly calculate degrees, minutes and seconds.

1. Introduction of new courses:

1. Use a protractor to draw an angle of 1°. How big is the angle of 1°?

2. Draw a straight angle ∠AOB, and observe and compare the relationship between the straight angle ∠AOB and the angle of 1°.

2. New course:

1. The unit of measurement for angles

Divide a straight angle into 180 equal parts, each part is an angle of 1 degree, and 1 degree is recorded as "1 °"

Angle measurement units and their conversions

unit of measurement for angle

1 degree = ______ minute, 1 minute = ______ second

1 second = ______ minute, 1 minute = ______ degree

The angle of 1° divided into 60 equal parts is called the angle of 1 minute, and 1 minute is counted as 1′. The angle of 1′ divided into 60 equal parts is called the angle of 1 second, and 1 second is counted as 1″.

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For more information about the PPT courseware "Preliminary Understanding of the Measurement and Graphics of Angle", please click the "Preliminary Understanding of the Measurement and Graphics of Angle ppt" tag.

"Angle and the Measurement of Angle" PPT courseware 2:

"Angle and the Measurement of Angle" PPT courseware 2 1. Xiao Ming's house is 5 kilometers away from the school, Xiao Hong's house is 2 kilometers away from the school, Xiao Ming's house, Xiao Hong's house, and the school are on a straight line, then Xiao Hong's house is _ _____km? 2. When farmers dig canals, they first erect posts and pull wires at both ends.

"Angle and the Measurement of Angle" PPT courseware:

"Angle and the Measurement of Angle" PPT courseware Learning objectives of this section: 1. Two definitions of angle and three ways to express angle. 2. The measurement unit of angle and the conversion of angle. The image of angle in life! What is an angle? ? There are many examples related to angles in life. Observe the picture below. Can you point out...

"Measurement of Angles" PPT Courseware 4:

"Measurement of Angles" PPT Courseware 4 1. Unit of Measurement of Angle One-360th of a circumferential angle is an angle of 1 degree, and is recorded as 1. One-sixtieth of 1 is 1 point, and is recorded as 1, that is, 1=60 One-sixtieth of 1 is 1 second, and is recorded as 1, that is, 1=60. The measurement units of angles are degrees, minutes, and seconds, which are six...

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Update Time: 2024-10-19

This template belongs to Mathematics courseware People's Education Press Seventh Grade Mathematics Volume 1 industry PPT template

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