Answer the following

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1. A triangle with no lines of symmetry is triangle.
2. A triangle with one line of symmetry is an triangle.
3. A triangle with three lines of symmetry is an triangle.
4. A has four lines of symmetry.
5. A has infinitely many lines of symmetry.
6. An has eight lines of symmetry.