A
Equal in measure.
Congruent.
A closed figure made of line segments.
Polygon
In order.
Consecutive
Connects two vertices that are not consecutive.
Diagonal.
Next to each other.
Adjacent.
Triangle with two equal sides, two equal angles.
Isosceles triangle.
Created by extending one side of a triangle.
Exterior angle.
The third side of an isosceles triangle.
Base.
Divides a line segment into two equal parts.
Midpoint.
Polygon with 8 sides.
Octagon.
Two coplanar lines that never intersect.
Parallel lines.
Tool used to measure angles.
Protractor.
Endpoints of the sides of a polygon.
Vertices.
Quadrilateral with two pairs of parallel sides.
Parallelogram.
Distance around a figure.
Perimeter.
Two angles furthest from an exterior angle.
Remote interior angles.
Quadrilateral with four congruent sides.
Rhombus.
Amount of space inside a figure.
Volume.
The movement of points, lines, or shapes.
Transformation.
The amount of surface inside a figure.
Adjacent angles that make a straight line.
Supplementary.
Triangle with no sides equal.
Scalene triangle.
Triangle with all angles less than 90 degrees.
Acute triangle.
States that a part is equal to itself.
Equality theorem.
Flat surface with two dimensions (length and width).
Plane.