Angle & Coordinate Plane – Geometry Basics
This chapter is about basics of Geometry including coordinate plane, angle, quadrant & congruent etc.
Points on the coordinate plane (x,y)
The first number in an ordered pair that correspongs to a number on the x-axis
The second number in an ordered pair that corresponds to a number on the y-axis
The four regions of the coordinate plane created by the x-axis and y-axis
The point at which the axes intersect.
Geometric figures that have exactly the same shape and size.
The point halfway between the endpoints of the segment.
Any segment, line or plane that intersects a segment at it’s midpoint.
Formed by two non-collinear rays that have a common endpoint
The common endpoint of an angle
Alternate Interior Angles
Alternate Exterior Angles
Horizontal Reflectional (Line) Symmetry
Midpoint of a Line Segment
Two-Dimensional Coordinate System
Point of Concurrency
made up of points and has no thickness or width
a flat surface that extends forever in all directions
points that do not lie on the same line
points that lie on the same line
points that do not lie on the same plane
points that lie on the same plane
Having the same measure
part of a line with two endpoints
amount of rotation between two lines (or rays) around a common point (vertex)
ray or line that divides an angle into two congruent angles
Two angles next to each other that share a common side and have the same vertex
two angles that add up to 180 degrees
two angles that add up to 90 degrees
the angles opposite each other when two lines cross
Two lines that intersect to form right angles (90 degrees)
the length between two points
A point that divides a segment into two congruent segments
polygon with a “dent” or “caved in”
polygon with no “dents”
a polygon that is both equilateral and equiangular
A triangle with 3 congruent sides and 3 congruent angles.
all angles are congruent
a triangle with two congruent sides and two congruent angles
a triangle with no congruent sides
consecutive interior angles
two angles that lie between the two lines and on the same side of the transversal
alternate interior angles
Interior angles that lie on opposite sides of the transversal
alternate exterior angles
Angles that lie outside a pair of lines and on opposite sides of a transversal.
lie on the same side of the transversal and in corresponding positions
The angle formed by the legs of an isosceles triangle.