Cuadriláteros / Quadrilaterals

1. Check the following webpage to revise all the types of quadrilaterals: Types of quadrilaterals.
   1. Open Geogebra and draw all of them.
   2. Divide each quadrilaterals into two triangles by drawing one of their diagonals.
   3. Write the name (type) of any triangle founded.
2. Click on this link to draw every type of quadrilaterals. Check which of them obey the following rules:
   1. All its sides are equal.
   2. All its sides are different.
   3. It has two pairs of equal sides.
   4. It has only a pair of parallel sides.
   5. It has opposite sides parallel.
   6. It has an obtuse angle.
   7. It has four right angles.
   8. It follow 1 and 7 rules.
   9. It follow 5, but not 7.
   10. It has equal opposite angles.
3. Click on this link to have a look at several disguised squares. Move their points and find out who they really are.
4. Always, sometimes, never.

By Cmglee - Own work, CC BY-SA 3.0, Link