Isosceles Triangle (Properties)
Definition:
An ISOSCELES TRIANGLE is a triangle that has AT LEAST 1 PAIR OF CONGRUENT SIDES.
Directions:
1) Click on the red checkbox to illustrate this definition.
2) Move any 1 (or more) of the vertices of this triangle around. Does it remain isosceles?
3) Click on checkbox 2. Move the vertices of the triangle around again. What do you notice?
4) Click on checkbox 3. This will draw the line that bisects the vertex angle of the isosceles triangle.
Questions:
Fill in the following conditional statement (based upon your observations).
If two sides of a triangle are congruent, then _____________________________________.