geometry in the real world
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Karsten Cravey
Block 5
Geometry in the Real World
An undefined term in geometry, it names a location and has no size.
Point
An undefined term in geometry, a line is a straight path that has no thickness and extends forever.
Line (Segment)
An undefined term in geometry, it is a flat surface that has no thickness and extends forever.
Plane
A figure formed by two rays with a common endpoint.
Angle
Lines that intersect at 90° angles.
Perpendicular Lines
Lines in the same plane that do not intersect.
Parallel Lines
A three-sided polygon.
Triangle
A triangle with one right angle.
Right Triangle
A five-sided polygon.
Pentagon
A six-sided polygon.
Hexagon
A quadrilateral with four congruent sides and four right angles.
Square
A quadrilateral with four right angles.
Rectangle
A quadrilateral with exactly one pair of parallel sides.
Trapezoid
A quadrilateral with two pairs of parallel sides.
Parallelogram
The set of points in a plane that are a fixed distance from a given point called the center of the circle.
Circle
A three dimensional figure with two parallel congruent circular bases and a curved lateral surface that connects the bases.
Cylinder
The set of points in space that are a fixed distance from a given point called the center of the sphere.
Sphere
A polyhedron formed by a polygonal and triangular lateral faces that meet at a common vertex.
Pyramid
A prism with six square faces.
Cube
A three-dimensional figure with a circular base and a curved lateral surface that connects the base to a point called the vertex.
Cone