Geometry

2. a parallelogram with four equal sides
4. a trapezoid with two opposite sides the same length
8. lines lines that are always the same distance apart
9. a four-sided shape with equal sides and right angles at all corners
12. a trapezoid with two right angles
13. line that divides a 2-D shape in half so that if you fold along the line, the halves match; shapes can have more than one line of symmetry
15. a four-sided polygon, for example, square, trapezoid, kite
18. a four-sided shape with right angles at all corners

1. a quadrilateral with two pairs of connected equal sides
3. the number of times the position of a shape can fit into its outline when you rotate it around a centre point for one complete rotation
5. the property of a shape that allows it to be folded in half so that the halves match exactly
6. a quadrilateral that has two pairs of parallel and equal sides
7. a 2-D shape having rotational symmetry can be turned around a centre point and fit into an outline of itself at least once before it has completed one full turn; also called turn symmetry
10. an angle that measures 90º
11. an attribute that is shared by all shapes of a certain type; for example, one property of squares is having four equal sides
14. a quadrilateral that has two parallel sides
16. a line that connects any two vertices of a polygon but is not a side of the polygon
17. a closed 2-D shape with all straight sides, for example, triangle, rectangle, hexagon