Why did the triangle go to therapy? It had too many acute vertices. (Okay, groan all you want. You smiled.)
Here’s another: What do you call a triangle that plays the violin? A right triangle at a recital. (I’ll stop now.)
The point is—pun intended—vertices are the stars of the triangle show. They’re where all the action happens.
Don’t Confuse Them with Angles
This is a common mix-up. A vertex is a point. An angle is the space between two lines at that point.
Think of it like this: The vertex is your elbow. The angle is how much you bend your arm. Totally different, but they hang out together.
If you say, “That vertex is 90 degrees,” a math teacher will cry. Don’t make them cry. They have enough grading to do.
