15 terms

Obtuse angle

An angle that measures more than 90 degrees but less than 180 degrees

Acute angle

An angle that measures less than 90 degrees but more than 0 degrees

Perpendicular

Lines that form square corners and 90 degree angles

Right angle

An angle that measures exactly 90 degrees

Parallel

Lines that are equal distance apart and will never intersect

Straight angle

An angle that measures exactly 180 degrees

Quadrilateral

A 4 sided polygon

Point

Names an exact location

Line segment

Part of a line with 2 endpoints

Ray

A straight path that begins at a point and goes on forever in only one direction

Intersecting

Lines pass through the same point

Polygon

A closed figure made of line segments

Right triangle

A triangle with one right angle

Acute triangle

A triangle with three acute angles

Obtuse triangle

A triangle with one obtuse angle