geometry in the real world

Geometry in the real world(Sports edition)

Austin Black

Period 2

Point

• Point-An undefined term in geometry, it names a location and has no size.

Line (segment)

• Line- An undefined term in geometry, a strait path that has no thickness and extends forever.

Plane

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

Angle

• Angle- A figure formed by two rays with a common endpoint.

Perpendicular lines

• Perpendicular lines- lines that intersect at 90 degrees.

Parallel lines

• Parallel lines-lines on the same plane that do not intersect.

Triangle

• Triangle- A three sided polygon.

Right triangle

• Right triangle- A triangle with one right angle.

Pentagon

• Pentagon- A five sided polygon.

Hexagon

• Hexagon- A six sided polygon.

Square

• Square-A quadrilateral with four congruent sides and four right angles.

Rectangle

• Rectangle- A quadrilateral with four right angles.

Trapezoid

• Trapezoid- A quadrilateral with exactly one pair of parallel sides.

Parallelogram

• Parallelogram- A quadrilateral with two pairs of parallel sides.

Circle

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

Cylinder

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

Sphere

• Sphere- The set of points in a space that are a fixed distance from a given point called the center of the sphere.