Rigid Transformations, Angles, and Congruence

Front

How many degrees are in a line?

Back

180 degrees

Front

Translate triangle ABC to triangle A'B'C': 2 units to the left, 9 units up.

Back

This is a translation transformation.

Front

What is a transformation that produces a mirror image of a figure?

Back

Reflection

Front

What is the value of angle A if ∠A=98°?

Back

∠A=98°

Front

What is a transformation that turns a figure about a point at a given angle?

Back

Rotation

Front

What is the definition of a rigid transformation?

Back

A transformation that preserves the shape and size of a figure.

Front

What is the definition of congruence in geometry?

Back

Two figures are congruent if they have the same shape and size.

Front

What is the sum of angles on a straight line?

Back

180 degrees

Front

What is the definition of translation in geometry?

Back

A transformation that moves every point of a figure the same distance in the same direction.

Front

What is the definition of dilation in geometry?

Back

A transformation that alters the size of a figure but not its shape.