Geometry in Rosholt

Sarah, Seth, Adi, Kaydence

perpendicular line segmentsTwo line segments that intersect at right

angles.

line segment

A part of a line between and including two

points called endpoints of the segment.

lineA 1-dimensional straight path that extends

forever in opposite directions.

rayA part of a line starting at the endpoint and

continuing forever in one direction.

right angleAn angle that is 90 degrees.

Vertex

The point at which the rays of an angle meet

Intersecting lines

Two lines that cross one another but do not for

a 90 degree angle.

convexA polygon in which all vertices appear to be

pushed outward

Concave

A polygon in which at least one vertex appear

to be pushed inward

Quadrangle

A four sided polygon.

Parallel linesLines in a plane that are the same distance

apart and never meet.

RectangleA parallelogram with all right angles.

Rhombus

A parallelogram with all sides the same length.

Trapezoid

A quadrilateral that has one pair of parallel

sides.

Parallelogram

A quadrilateral with two pairs of parallel lines.

parallel rays

Two rays that are the same distance apart and

never meet.

RadiusA line segment from the center of a circle to

any point on the circle.

DiameterA line segment that passes through the center

of a circle and has endpoints on the circle.

Circumference

The distance around a circle.

The End !