Geometry in the Real World

John HoangBlock 3

Theme: Sports

Point

An undefined term in geometry, It defines a location and has no size.

Line (Segment)

An undefined term in geometry , a line is a straight path that has no thickness and extends forever.

Plane

An undefined term in geometry, it is a flat surface that has no thickness and extends forever.

Angle

A figure formed by two rays with a common endpoint.

Perpendicular Lines

Lines that intersect at 90° angles.

Parallel Lines

Lines in the same plane that do not intersect.

Triangle

A three-sided polygon.

Right Triangle

A triangle with one right angle.

Pentagon

A five-sided polygon.

Hexagon

A six-sided polygon.

Square

A quadrilateral with four congruent sides and four right angles.

Rectangle

A quadrilateral with four right angles.

Trapezoid

A quadrilateral with exactly one pair of parallel sides.

Parallelogram

A quadrilateral with two pairs of parallel sides.

Circle

The set of points in a plane that are a fixed distance from a given point called the center of the circle.

Cylinder

A three-dimensional figure with two parallel congruent circular bases and a curved lateral surface that connects the bases.

Sphere

A three-dimensional surface, all points of which are equidistant from a fixed point.

Rhombus

A quadrilateral whose four sides all have the same length.

Oval

An object having the general form or shape of an egg.

Star

A figure usually having five or six points radiating from or disposed about a center.