1.
the distance all the way around a shape
2.
the number of surface units that take up the inside of the shape
3.
triangle that has a 90 degree angle
4.
triangle that has an angle greater than 90 degrees
5.
triangle that has an angle less than 90 degrees
6.
triangle where all sides are the same
7.
triangle where 2 sides are the same
8.
triangle where all sides are different
