Copy of Properties of Similar Triangles
Move point A, B or C to create any triangular shape.
1. DEF is similar to triangle ABC. What makes them similar?
2. Use point E to create create other triangles similar to triangle ABC. Observe what change and what does not change.
What do you notice about and ?
What do you notice about and ?
What do you notice about and ?
What do you notice about the relationship between AB and DE; BC and EF; and AC and DF?
Conclusion:
In similar figures, matching sides are ____________.
In similar figures, matching angles are ___________.