Geometry is the study of the relations of points, lines, surfaces, solids, and higher dimensional analogs.
Key terms to know:
Line- no thickness, and extends forever in two directions and determined by two unique points.
Collinear points- Points on the same line.
Line Segment- subset of a line, containing two points of the line and all the points between those two points.
Ray- subset of a line.
Intersecting lines- lines with exactly one point in common.
Parallel lines- coplanar that have no points in common.
Angles- formed by two rays with the same end points.
Vertex- common endpoint of two rays that form an angle.
Adjacent angles- angles that share a common side and vertex, but without overlapping interiors.
Polygon- a simple closed curve with sides that are line segments.
Triangles- a shape that ALWAYS adds up to 180 degrees.
Quadrilateral- a shape that its angles ALWAYS add up to 360 degrees.
No comments:
Post a Comment