Transformations and Congruence Flashcard

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way to create a new shape.

Front

What does it mean for two figures to be congruent?

Back

Two figures are congruent if they have the same shape and size, but may be in different positions.

Front

What is the algebraic rule for a 180° rotation clockwise?

Back

(-x, -y)

Front

What happens to the angles of a triangle when it is reflected across an axis?

Back

The angles remain the same; the triangle is congruent to the original.

Front

What is the result of reflecting a point (x, y) across the x-axis?

Back

The new coordinates will be (x, -y).

Front

What is the algebraic rule for a 90° rotation counterclockwise?

Back

(x, y) → (-y, x)