Math 2 Unit 1 Vocabulary

Vocabulary flashcards for Math 2 Unit 1 Transformations.

Translation

A transformation that slides a figure without changing its size or orientation.

Algebraic Rule (Translation)

A rule that describes how the coordinates of a point change during a translation, e.g., (x, y) → (x + a, y + b).

Vector (Translation)

A quantity having direction and magnitude, often used to represent a translation, e.g.,

Reflection

A transformation that flips a figure over a line, creating a mirror image.

Rotation

A transformation that turns a figure about a fixed point.

Regular Polygon

A polygon that is equiangular (all angles are equal) and equilateral (all sides are equal).

Center of a Regular Polygon

The point equidistant from each vertex of the polygon.

Rotation Symmetry

A figure has rotational symmetry if it can be rotated less than 360 degrees about a point and still look the same.

Dilation

A transformation that changes the size of a figure by a scale factor.

Isometry

A transformation that preserves distance (length) and angles.

Scale Factor

The ratio of the lengths of corresponding sides in a dilation.

Similar Figures

Figures that have the same shape but different sizes; their corresponding angles are congruent, and corresponding sides are proportional.

Enlargement

A dilation with a scale factor greater than 1.

Reduction

A dilation with a scale factor between 0 and 1.

Isometric Figure

A figure that remains the same size; a dilation with a scale factor of 1.

Composition

A sequence of two or more transformations applied to a figure.