An adorable little angle. By "little," of course we mean "smaller than 90 degrees in measure."
The conjoined twins of the geometry world. Adjacent angles always share a vertex and a side.
The corner of empty space between two lines, rays, or segments that share a point. Usually, angles are measured in degrees (and most of them have at least a bachelor's degree).
Split in two. We can say that an angle is bisected, a segment is bisected, or that the Dakotas are bisected.
Something that splits another thing in half. Like a ray being an angle bisector, or a point bisecting a line segment, or a chainsaw bisecting a zombie.
Used to describe points that are all on the same line.
Two wrongs don't make a right, but two complementary angles do. They're two angles that add up to 90° exactly.
Used to describe lines or points that are all on the same plane.
A formula that calculates distances based on the coordinates we plug into it. It takes the form of this lovely thing:
The distance between two endpoints. Can be expressed in units of millimeters, inches, feet, miles, or light-years—they're all lengths.
A one-dimensional segment that continues on forever in both directions. Time-consuming to draw, so we use arrows on the ends to symbolize that it never ends.
Sometimes just called a "segment." It's a finite piece of line between two endpoints.
A point that bisects a line segment into two congruent segments. It's the halfway point.
An angle larger than 90° in measure. It has nothing to do with their smarts.
The point (0, 0) on the x
graph. In 3D space, it's (0, 0, 0). For any additional dimensions, just add more zeros.
Two lines that create a 90° angle when they intersect. Well, actually they create four 90° angles, but who's counting?
A "slice" of three-dimensional space. It has length and width, but no depth, like a sheet of paper that stretches out forever in all directions.
The smallest object…ever. It has no mass, no length, and no size. It describes only a location.
A hybrid of a line and a segment. It has one endpoint, but then goes off forever in the other direction. It's like a ray of sunshine that starts at the sun and then continues on forever.
An angle that's exactly 90°. Naturally, that means any angle that isn't 90° is wrong.
An angle that measures 180°. The title a straight line gives itself when it wants to seem more impressive.
Two angles that add up to 180°. It doesn't matter if they're adjacent or on different planets.
Angles that are opposite each other resulting from two intersecting lines. Vertical angles are always