Geometry Flashcards
(39 cards)
Line
A straight path that continues without end in both directions
Point
A location in space
Line Segment
A line between two endpoints
Ray
A line that has one endpoint and goes without end in one direction
Intersecting Lines
Lines that meet or intersect at a common point
Parallel Lines
Lines that do not intersect. They are always the same distance apart
Angle
Something formed by two rays that have the same endpoint
Vertex
The endpoint of the angle
Right Angle
An angle that forms a square corner
Obtuse Angle
An angle that is greater than a right angle
Acute Angle
An angle that is less than a right angle
Perpendicular
Lines that intersect to form four right angles
Polygon
Any flat, closed figure that has straight sides and many angles
Triangle
A special polygon that has three line segments and three angles
Equilateral triangle
A triangle with all sides the same length
Isosceles triangle
A triangle with at least two sides of equal length
Scalene triangle
A triangle with three unequal sides
Congruent figures
Figures that have the same shape and same size
Similar figures
Figures that have the same shape but not the same size
Quadrilateral
A polygon with four sides and four angles
Parallelogram
A shape that has two pairs of congruent sides and two pairs of parallel sides
Rectangle
A parallelogram that has four right angles
Rhombus
A parallelogram with four congruent sides
Square
A rectangle with four congruent sides
