Examine the shapes listed on your Shapes Toolkit. Name a shape that meets the following conditions: It has a pair of congruent sides, it has one right angle, and it has three vertices.
Try drawing a shape that meets these conditions.
Draw two congruent lines (ones that are equal in length) that create a right angle.
Add another line that will give the shape three vertices.
Do you remember what this shape is called?
Isosceles right triangle