Geometry in the Real World Project Power-point presentation Mrs. Sykes Geometry Class Block 1 Theme: Buildings, and architecture

Point

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

Line (Segment)

A line is a straight path that has no thickness and extends forever. A line segment a type of the line consisting of two end-points and

all points between them.

Planes

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 a ninety degree angle.

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.

Squares

A quadrilateral with four congruent sides and four right angles.

Rectangles

A quadrilateral with four right angles.

Trapezoid

A quadrilateral with exactly one pair of parallel sides.

Parallelogram

A quadrilateral with too 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

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

Acute Triangle

A triangle with three acute angles.

Obtuse Triangle

A triangle with one obtuse angle.

Pyramid

A polyhedron formed by a polygonal base and triangular lateral faces that meet at a common vertex.