Count corners and simple angles
2nd Grade Math practice: How many corners does a triangle have. Part of geometry (Geometry).
~9 min
Students count corners in simple polygons as an early angle idea.
Defining a Corner
A corner is the exact spot where two straight sides of a shape meet. You can find a corner by looking for where two lines touch at a point.
💡 Follow the edge of a shape with your finger until you reach a point where it changes direction.