Enhance Your Learning with Geometry Flash Cards for quick learning
A location in space with no size or shape.
A straight path that extends infinitely in both directions.
A part of a line with two endpoints.
A part of a line with one endpoint that extends infinitely in one direction.
Lines in the same plane that never intersect.
Lines that intersect at a 90-degree angle.
Lines that cross each other at a point.
An angle that measures less than 90 degrees.
An angle that measures exactly 90 degrees.
An angle that measures more than 90 degrees but less than 180 degrees.
An angle that measures exactly 180 degrees.
Two angles that share a common vertex and side, but have no common interior points.
Two nonadjacent angles formed by intersecting lines.
Two angles whose measures add up to 90 degrees.
Two angles whose measures add up to 180 degrees.
A closed figure formed by three or more line segments.
A polygon with three sides.
A triangle with three congruent sides.
A triangle with at least two congruent sides.
A triangle with no congruent sides.
A triangle with one right angle.
A triangle with one obtuse angle.
A triangle with three acute angles.
A polygon with four sides.
A quadrilateral with four right angles.
A quadrilateral with four congruent sides and four right angles.
A quadrilateral with four congruent sides.
A quadrilateral with opposite sides that are parallel and congruent.
A quadrilateral with one pair of parallel sides.
A round shape with all points equidistant from the center.
A line segment from the center of a circle to any point on the circle.
A line segment that passes through the center of a circle and has endpoints on the circle.
The distance around a circle.
The measure of the amount of space inside a shape.
The distance around the outside of a shape.
The measure of the amount of space inside a three-dimensional shape.
The sum of the areas of all the faces of a three-dimensional shape.
A plane formed by two perpendicular number lines called axes.
A pair of numbers used to locate a point on a coordinate plane.
A transformation that slides a figure from one position to another without changing its shape or size.
A transformation that flips a figure over a line, creating a mirror image.
A transformation that turns a figure around a fixed point called the center of rotation.
A transformation that changes the size of a figure, but not its shape.
A logical argument that shows a statement is true.
A statement that can be proven true using previously proven statements and definitions.
The side opposite the right angle in a right triangle.
In a right triangle, the ratio of the length of the side opposite an acute angle to the length of the hypotenuse.
In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse.
In a right triangle, the ratio of the length of the side opposite an acute angle to the length of the side adjacent to the acute angle.
To divide into two congruent parts.
A line, segment, or ray that is perpendicular to a segment at its midpoint.
A ray that divides an angle into two congruent angles.
A tool used to draw circles and arcs.
A tool used to draw straight lines.
In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.
The measure of the amount of space inside a triangle.
The measure of the amount of space inside a rectangle.
The measure of the amount of space inside a square.
The measure of the amount of space inside a circle.
The measure of the amount of space inside a prism.
The measure of the amount of space inside a cylinder.
The sum of the areas of all the faces of a prism.
The sum of the areas of all the faces of a cylinder.