Basics
This zero-dimensional geometric element represents a precise location in space and has no length, width, or height.
What is a point?
This specific type of angle measures exactly 180 degrees, forming a straight line.
What is a straight angle?
The interior angles of any triangle will always add up to this exact number of degrees.
What is 180 degrees?
This is the specific term for the flat, two-dimensional surfaces that form the outside of a three-dimensional solid.
What is a face?
This is the exact coordinate point (0,0) where the horizontal x-axis and vertical y-axis intersect.
What is the origin?
This geometric figure has a single fixed starting point and extends infinitely in only one direction.
What is a ray?
This term describes two or more lines that reside in the same plane but never intersect, no matter how far they extend.
What are parallel lines?
This formula, written as (a^2 + b^2 = c^2), is used to find the side lengths of a right triangle.
What is the Pythagorean Theorem?
This measurement calculates the total capacity or amount of three-dimensional space enclosed inside a solid object.
What is volume?
This type of transformation slides a geometric shape across a plane without rotating or resizing it.
What is a translation?
Unlike a line, this straight geometric path has a measurable length because it is bounded by two distinct endpoints.
What is a line segment?
These are angles that measure greater than 90 degrees but less than 180 degrees.
What are obtuse angles?
This mathematical constant represents the ratio of a circle's circumference to its diameter.
What is Pi?
This perfectly symmetrical 3D shape consists of points that are all an equal distance from a single central point.
What is a sphere?
This specific transformation flips a shape over a line, creating a mirror image.
What is a reflection?
This term describes a perfectly flat, two-dimensional surface that extends infinitely in length and width.
What is a plane?
This adjective describes two lines that intersect at a shared point to form exact 90-degree angles.
What is perpendicular?
This term defines the total distance around the outermost boundary of a two-dimensional shape.
What is perimeter?
In solid geometry, these are the corner points where three or more edges meet.
What are vertices?
This term describes a transformation that changes the size of a shape by stretching or shrinking it.
What is a dilation?
Named after an ancient Greek mathematician, this set of rules forms the standard geometry of flat surfaces and points.
What is Euclidean geometry?
This geometric term describes two angles whose measures add up to exactly 90 degrees.
What are complementary angles?
This specific type of quadrilateral features exactly one pair of parallel sides.
What is a trapezoid?
To find the volume of this specific 3D shape, you multiply the area of its circular base by its height.
What is a cylinder?
A standard coordinate plane is divided into this many numbered grid areas, called quadrants.
What is four?