lines angles Flashcards
undefined terms
Point,line,plane
Angles
Straight angle, right angle, acute angle, obtuse angle
Collinear points all lie in the same _____
Line
Congruent
Same measure
A triangle with at least two equal length
Isosceles triangle
An angel equal to 180° degrees
Straight angle
Formed by two rays with the same end point
Angle
Part of a line that has two endpoints
Line segment
An angel that measures less than 90° degrees
Acute angle
Lines on a plane that never intersect
Parallel lines
—
Line segment
An angel that is exactly 90° degrees
Right angel
An exact in space represented by a dot
Point
A flat surface made up of a continuous and unending collection of points
Plane
Two angles whose measure have a sum of 90°
Complimentary angels
An angel greater than 90° degrees ( but less than 180° degrees)
Obtuse angle
Lines that intersect at right angles
Perpendicular lines
Part of a line made up of one end point
Ray
Coplanar points all lie in the same ______
Plane
Lines that intersect at a certain point
Interesting lines
A straight continuous and unending set of a points in a plane
Line
Two angles whose measure have a sum of 180°
Supplementary angles
A triangle with sides of equal length
Equilateral triangle
A triangle with one 90° degree angle
Right triangle
A triangle with no congruent sides and no congruent angles
Scalene triangle
A common point in an angel, polygon, prism, or pyramid
Vertex
