Circle the triangles below that you can be SURE are similar to the triangle repeated
in the design.
To use similarity, you
need to be able to spot it
You won’t normally get instructions that
actually tell you that shapes are similar. So
in order to use similarity, first you need to
be able to be certain that shapes are similar.
You can do that by looking for matching sets
of angles.
The designer’s notes told
us the shapes were similar.
53
o
86
o
53
o
41
o
86
o
53
o
53
o
41
o
86
o
41
o
86
o
41
o
Mountain
tip triangle
is the same
shape
triangle as
the whole
mountain
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