Lesson: Properties of 2D Shapes Mathematics • 1st Grade

In this lesson, we will learn how to analyze 2D shapes to see what features a shape always has and what features it sometimes, or never, has.

Lesson Video

Q1:

Do all the triangles have 3 edges (sides)?

Q2:

Liam has sorted these shapes by size.

Are all the rectangles in the same group?

Q3:

Not all triangles are big.

Fill in the blank: Not all triangles .