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CAI Geometry Vocab 1

Acute angle that has a measure of less than 90 degrees
Area the measurement if square units of the interior region of a 2-dimensional figure
Right angle that has a measure of exactly 90 degrees
Obtuse angle that has a measure of more than 90 degrees
Adjacent two angles that lie in the same plane, have a common vertex and a common side, but not common interior points.
Bisector something that splits an object in 2 equal parts
Distance the length of a segment between two points
Circumference the distance around the outside of a circle calculated by 2πr or πd
Collinear on the same line
Coplanar on the same plane
Complementary two angles that add to 90 degrees
Congruent same size, same shape
Construction To draw a shape, line or angle accurately using a compass and straightedge
Isometric Drawing Way to draw a 3D figure where all objects and lengths the same size will be drawn the same size whatever their position.
Linear pair two adjacent angles that form a straight line
Net a 2-d pattern that can be folded to form a solid 3-d
Midpoint Midpoint-the point on a segment exactly halfway between the endpoints of the segment
Orthographic Drawing two-dimensional drawing of a three-dimensional object, using two or more additional drawings to show additional views of the object
Perpendicular intersecting to form right angles
point a defined position in space
line is made up of points, it has no thickness or width
perimeter the distance around a two-dimensional shape
plane flat surface made up of points that has no depth and extends indefinitely
postulate/axiom A statement, also known as an axiom, which is taken to be true without proof. That are the basic structure from which theorems are derived
ray a part of a line that begins at a point and continues without end in one direction
segment a measureable part of a line that consists of two points, called endpoints, and all of the points between them
supplementary two angles with measures that have a sum of 180o
vertex the corner of a plane polygon or of a prism
vertical angles 2 nonadjacent angles formed by 2 intersecting lines
angle the opening that is formed when two lines, line segments, or rays intersect
Created by: abankes