Page 31 - Math G4 (second term) (4) booklet-_PART2

Date:…../……./2024 H.W: C.W: Absent:

unit(13) lesson (1) The circle and the Degrees
Angles in a circle can be classified by their measurement

Acute angles Right angle Obtuse angle Straight

Between 0? and Exactly 90? , 1 Between 90? angle Exactly
90? 4 and 180? 180? , 1 of a

of a full 2

rotation . full rotation

Notes

a) Circle can be divided into 4 right angles or two straight angles ,

each circle has 360? .

b) The right angle = ?? of the circle.
??

c) The straight angle = ?? of the circle.
??

d) There are two directions they can go on a circle clockwise or

counterclockwise ( anticlockwise)

e) 0? is the starting point.

f) Full rotation makes 360?

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