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Angle Properties

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by

Mr Mattock

on 26 May 2016

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Transcript of Angle Properties

Angle Properties
Starter
Angle Properties
Angle Properties
Starter
Buzzy
Beetroot
Clockwise
Drizzle...
Angles that form straight
lines add up to 180
Angles around a point add up to 360
o
o
Opposite angles are equal sizes.
L.O. - To calculate the sizes of angles in certain diagrams.
Activity
Angle Properties
Angles that form a straight
lines add up to 180
Angles around a point add up to 360
o
o
63
a
79
o
o
38
101
103
o
o
o
Angle Properties
63
a
79
o
o
38
101
103
o
o
o
63 + 79 + a = 180
142 + a = 180
a = 180 - 142 = 38

o
o
o
o
o
o
o
o
b
b
38 + 101 + 103 + b = 360
242 + b = 360
b = 360 - 242 = 118
o
o
o
o
o
o
o
o
o
Activity
k = 54
a = 134
n = 108
c = 62
p = 83
d = 133
f = 35 , g = 81
h = 44 , i = 105
p=38 , q=43 , r=99
o
o
o
o
o
o
o
o
o
o
o
o
o
Plenary
Calculate the angle between the minute hand pointing at 10, and the hour hand pointing at 2.
Plenary
Calculate the angle between the minute hand pointing at 10, and the hour hand pointing at 2.

120 degrees
Activities
Activity
Answers

Key
Examples

Worked
Example
Full transcript