Classifying Shapes

5. Algebraic expression that gives the distances between pairs of points in terms of their coordinates
10. A triangle that has a right angle (90°)
11. A triangle with all three sides of equal length
12. A triangle with two equal sides.

1. shape with 4 equal straight sides
2. shape with opposite sides parallel and equal in length
3. A triangle with all sides of different lengths.
4. In a right angled triangle the square of the long side is equal to the sum of the squares of the other two sides
6. shape with 4 equal sides and every angle is a right angle (90°)
7. a triangle with three acute angles (angles measures between 0º and 90º)
8. a four-sided flat shape where every angle is a right angle (90°).
9. A triangle that has an angle greater than 90°