The right angle- grade 3 - grade 4

Описание к видео The right angle- grade 3 - grade 4

00:00 introduction
00:06 what is an angle?
00:50 a set square
01:22 what is the set square used for?
01:30 where can we find right angles ?
01:42 how do we verify if an angle is right ?
02:35 how to draw a right angle ?


#right
#angle

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