Geometry Vocab Review

Front

Angle < 90°

Back

Acute angle

Front

A straight path extending indefinitely in both directions

Back

Line

Front

A line with one endpoint extending indefinitely in one direction.

Back

Ray

Front

Polygon with 4 sides

Back

Quadrilateral

Front

Angle measuring 90 degrees

Back

Right angle

Front

Point where two rays or sides meet to form an angle.

Back

vertex

Front

Two or more lines equidistant and never intersecting

Back

parallel lines

Front

Angle > 90°

Back

Obtuse angle

Front

Intersecting lines forming right angles

Back

Perpendicular lines

Front

A figure with 3+ straight lines forming a closed shape.

Back

Polygon