Problem 1.2: Symmetries of Shape

(p.13, A-D)

shapes_set.jpg

A. Triangles:

Which triangles have reflection symmetry?
Which triangles have rotation symmetry?
Which triangles have no symmetries?
reflection P, A
rotation A
None T
CHRIS

B. Quadrilaterals:


Which quadrilaterals have reflection symmetry?
Which quadrilaterals have rotation symmetry?
Which quadrilaterals have no symmetries?

C. Remaining Polygons:

What is special about the remaining shapes in the set above?
kate, ABBy and anni: they all have 5 or more sides.

D. Shapes in our classroom:

Sketch a few shapes with symmetry in our classroom and describe its symmetries. Try using the art pad or on-line sketchpad to draw your shape. See if you can import it into this page.
kate, ABBy and anni: quadralaterals, triangles and polygons.