Rigid Transformations
A change that keeps a figure's size and shape.
What is a rigid transformation?
A figure is divided by a line into 2 halves that are mirror images.
What is reflectional symmetry?
2 adjacent angles that add up to 180 degrees.
What are supplementary angles?
A line that divides another line in half and forms a 90 degree angle.
What is a perpendicular bisector?
Little lines on a figures sides that show the lines are the same length.
What are tick marks?
Congruent
What is the same?
A shape looks exactly the same when it is turned less than a full turn around a point.
What is rotational symmetry?
2 adjacent angles that add up to 90 degrees.
What are complementary angles?
A line segment tht has a starting point and a direction and goes on to infinity.
What is a ray?
Conjecture
What is an educated guess?
A rigid transformaion that can be moved in a straight line.
What is a translation?
An imaginary line that divides an object into 2 identical halves.
What is a line of symmetry?
Corresponding angles
What are 2 angles that are next to each other called?
2 lines that move in the same direction and never touch.
What are parallel lines?
A mathematics rule that that is shown to be true.
What is a theorem.
A rigid transforamtion that turns around a point.
What is a rotation?
An object that can be divided into 2 or more identicle pieces.
What is symmetrical?
All interior angles of a triangle must add up to 180 degrees.
What is the Triangle Angle Sum Theorem?
A ray that has an end point.
What is a vector?
Pre-image
What is the beginning shape?
A transformation that flips over a line like a mirror image.
What s a reflection?
What is the angle of rotation.
The direction and distance an object is turned around a point.
A pair of angles that area opposite each other in a pair of intersecting lines.
What are vertical angles?
A line that crosses 2 parallet lines.
What is a transversal?
Image
What is the end shape after a transformation?