Congruent or Similar
Congruent
When an object flips or mirrors over a line of symmetry
Reflection
are they congruent or similar?
When an object gets smaller or larger
Dilation
The sides of triangle ABC are 12 ft, 15 ft and 17 ft. The angles are 32 degrees, 75 degrees and 73 degrees.
The sides of triangle GHI are 17 ft, 15 ft and 12 ft. The angles are 32 degrees, 74 degrees and 74 degrees.
similar
When an object moves to any spot on the coordinate plane (graph)
Translation
Congruent or Yes
When a point moves but one point remains the same, "pivot"
What two factors have to be the same for a shape to be congruent?
sides and angles
What does pre-image mean