DBHS Geometry Vocab Flash Cards (2025-2026)

Front

Definition of Collinear points

Back

points that lie on the same straight line or in a single line.

Front

Definition of Translation

Back

moves a shape left or right and/or up or down.

Front

Point-slope form of a linear equation

Back

y - y₁ = m(x - x₁), where 'm' is the slope of the line and (x₁, y₁) is a given point which is on the line.

Front

Slope-intercept form of a linear equation

Back

y = mx + b, where m is the slope of the line and b is the y-intercept.

Front

Standard form of a linear equation

Back

Ax + By = C, where A,B, and C are not fractions, and A is positive.

Front

Definition of Parallel lines

Back

two lines that have the same slope (i.e., are the same distance from each other and will never meet).

Front

How do you find the distance between two points on a coordinate plane?

Back

Draw a right triangle and use Pythagorean Theorem.

Front

Pythagorean Theorem

Back

a²+b²=c²

Front

Definition of Congruent

Back

same size, same shape.

Front

Definition of Pre-Image

Back

the image of a graph or shape before it is taken through a transformation.