Angles and demons
Like two friends sharing AirPods, these angles share a common side and vertex.
What are adjacent angles?
This geometric object has a location but no size — kind of like your motivation Friday A4.
What is a point?
This triangle has all sides equal, the geometry version of a perfectly balanced playlist.
What is an equilateral triangle
Half a diameter and one of the first circle terms everyone learns.
What is a radius?
This transformation slides a figure like scrolling to the next TikTok or gram or swiping on Tinder.
Like a corner, these two angles add to 90°.
What are complementary angles?
This figure begins at one endpoint and continues forever, unlike your phone battery.
What is a ray?
This triangle contains one 90° angle and basically carries all of trigonometry on its back.
What is a right triangle?
This NPC stretches across a circle through the center...If NPC only stood for "Nicely placed chord"
What is a diameter
A mirror selfie demonstrates this transformation.
What is a reflection?
When a transversal cuts parallel lines, these angles are on opposite sides but still “inside the chat.”
What are alternate interior angles?
These lines intersect to form perfect 90° corners, like graph paper IRL.
What are perpendicular lines?
This segment drops straight down from a vertex like your grade after skipping homework. IMO it's the height...
What is an altitude
The distance around a circle, basically the circle’s daily step count, or if you walked AROUND it
What is circumference?
The original figure before any transformation — the geometry “before pic.”
What is the preimage?
This pair forms a straight line and adds to 180°, like doing a complete turnaround in life.
What is a linear pair?
These points all lie on the same line, basically geometry’s version of “stay in your lane.”
What are collinear points?
This triangle has no equal sides, like a group project where nobody matches effort.
What is a scalene triangle?
This segment connects two points on a circle — not the guitar kind from music class.
What is a chord?
The only non-rigid transformation creating similar (not congruent shapes). Like zooming in on Instagram photos
What is a dilation?
These opposite angles formed by intersecting lines are always congruent — despite what their name says, even lying down horizontally, they're true ride-or-dies.
What are vertical angles?
These lines never intersect and are not parallel, like two celebrities who avoid each other at awards shows.
What are skew lines?
Two _______ interior angles of a triangle sum to this ________ angle. Think TV controller...
remote exterior
This line cuts all the way through a circle, unlike that Dominos pizza.
What is a secant line
The resulting figure after a transformation — the geometry glow-up.
What is the image?