Transcript
100100 100100
200200 200200
400400 400400
300300
400400
Sim
300300 300300 300300
200200
400400
200200
100100
500500 500500 500500 500500
100
Rotations Sym Whatever
Row 1, Col 1
8:2 or 4:1 … the scale factor is 4
1,2
1,3
1,4
2,1
Tina’s shadow is 2.4 mand the first tree’sshadow is 10.8 m.
What is the height ofthe tree?
2,2
2,3
What is the break-down & absorption of food in the intestine ?
2,4
3,1
3,2
3,3
Rotational symmetry
A shape has rotational symmetry when it coincides with itself after
a rotation of less than 360° about its centre.
3,4
4,1
Are any of these quadrilaterals similar?
Justify your answer.
4,2
4,3
order of rotation.
The number of times the shape coincides with itself, during a rotation of 360°, is the
order of rotation.
4,4
5,1
5,2
5,3
angle of rotation symmetry
the angle of rotation symmetry = 360° order of rotation
5,4
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