Post on 13-Jan-2016
transcript
AA
BB
CC A’A’
B’B’
C’C’
Similar Shapes
The following diagram shows an enlargement by a scale factor 3 of triangle ABC
Note
•Each length on the enlargement A’B’C’ is three times the corresponding length on the original shape.
•The distance of any point on the enlargement from the centre of enlargement is three times longer than the corresponding distance on the original shape
Enlarge the Following Shapes
1) Scale factor 2
2) Scale factor 3
3) Scale factor 1/2
44
11
Draw this face in your Draw this face in your book to your choice book to your choice
(suggest 1cm high by 2 (suggest 1cm high by 2 cm wide)cm wide)
44
44
Solutions
1) Scale factor 2
2) Scale factor 3
88
22
3) Scale factor 1/2
Thus 4 triangles fit into the original Thus 4 triangles fit into the original triangle.triangle.