# Thread: [SOLVED] Transformations and Congruence :S

1. ## [SOLVED] Transformations and Congruence :S

Hey,
i'm new to this forum so sorry if i do anything wrong,
and you guys are probably like maths geniuses so i probably seem very dumb but i'm stuck on my homework.

The question is:

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The diagram shows part of a shape.
The shape has rotational symmetry of order 2 about x.

a. Copy and complete the shape, and name it.
b. Show how the completed shape will tessellate.

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I've tried to draw the diagram as best as i could on paint, It's in an attachment.

I understand the questions, but not,
'The shape has rotational symmetry of order 2 about x'

Do they mean spin the triangle around on the point of x and it has 2 rotational symmetries?

If so, how can i complete the shape?

2. Originally Posted by Collapsible
...

I understand the questions, but not,
'The shape has rotational symmetry of order 2 about x'

...
Have a look here: Rotational Symmetry