Lines
Lines that never intersect and are always the same distance apart.
parallel lines
An angle greater than 90 degrees but less than 180.
Obtuse angle
An exact location in space
Point
A closed four sided shape made with straight lines
Quadrilateral
A closed shape with 3 vertices.
Triangle
A part of a line with two endpoints.
Line segment
An angle smaller than 90 degrees.
Acute angle
Name of where two sides meet on a shape.
Vertex
A quadrilateral with one set of parallel sides.
Trapezoid
A triangle with all acute angles.
Acute Triangle
Lines that intersect at a right angle.
Perpendicular Lines
An angle that is exactly 90 degrees
Right angle
Angles are measured in_______.
Degrees
A quadrilateral with 2 sets of parallel sides.
Parallelogram or Rectangle
A right triangle has _____ right angles.
1
Lines that meet or cross.
Intersecting lines
An angle in a straight line that equals 180 degrees.
Straight angle.
A synonym for congruent is _______.
Same
A quadrilateral with 4 right angles, all the same side lengths, and 4 right angles.
Square
A triangle with one angle that measures more than 90 degrees.
Obtuse triangle
Line with an endpoint that continues on in one direction forever.
Ray
Angles that share a ray and vertex.
Adjacent angle
A closed figure with all straight sides.
Polygon
A quadrilateral with 2 sets of parallel sides and the same side lengths, but no right angles.
Rhombus.
A triangle that has 2 sides with the same length.
Isosceles