Page 35 - Math G4 (second term) booklet_Neat

Date:…../……./202 H.W: C.W: Absent:

lesson(2) Angles on a clock face

 The clock has been separated into 12 equal angles . As the measure
of the circle is 360 ,
Ο
 then the measure of each angle

equals of the circle.

 The measure of one angle = x 360 = 360 † 12 = 30 Ο
Ο
Ο

1 2 1 3 1
= 30 Ο = = 60 Ο = = 90 Ο
12 12 6 12 4

6 1
4 = = 120 Ο 5 Ο = = 180 Ο
1
12 3 12 = 150 12 2

90