Name shapes by their sides, angles and faces
Naming shapes by their features gives your child the words to describe the world around them and a habit of looking closely. Counting sides, corners, and faces teaches them to reason about a shape rather than judge its look, so a lopsided six-sided shape is still a hexagon. That careful attention leads to 3rd grade, when children sort four-sided shapes into families like rectangles and squares, and to measuring angles in 4th grade.
In this video, your child will learn to name shapes by counting their parts.
The lesson stops at each question for your child's answer.
Three problems, each a little harder
Each problem is worked step by step. Your child will solve the last one before Bobby shows how.
Example 1
How many angles does a quadrilateral have?
Example 2
What is a solid shape with six square faces called?
Your child's turn
How many angles does this shape have?
The three key steps
- 1Count the sides and angles.
- 2The number tells the name.
- 3Cube: 6 square faces.
Mistakes to listen for
- Recognizing only regular shapes, so refusing to call an uneven six-sided shape a hexagon.
- Thinking a quadrilateral must be a square or rectangle, and leaving out kites and slanted four-sided shapes.
- Losing count of sides or angles by starting and stopping at different corners and counting one twice.
The lesson shows every step, so your child sees why it works. Read our parent's guide to naming triangles, hexagons, cubes, and more →
Is your child ready to practice what they've learned?
Bobby's Math Club offers unlimited practice for free.
Join the clubMore kid-friendly lessons
More 2nd grade Geometry, with questions your child answers along the way.
Questions parents ask
Does my child need an account to watch?
No. You can watch this on any device at any time. If your child would like to practice naming triangles, hexagons, cubes, and more, and you'd like parent-friendly reports on your child's progress and growth, you can join Bobby's Math Club for unlimited free practice.
What happens when my child answers a question?
A right answer gets a cheer, and the lesson carries on. If your child isn't sure, they can tap "I don't know yet", and Bobby gives the answer and shows another example. Nothing is scored or stored.
Is this the same lesson that's on YouTube?
Yes. Here, the lesson stops at each question and waits for your child to answer. On YouTube, each question stays on screen for a few seconds, and then the lesson plays on.
Where can I learn more?
There's a short, kid-friendly lesson like this one for every Pre-K to 5th grade math skill, all in our video library. Our parent's guide to naming triangles, hexagons, cubes, and more has more on where kids get stuck and how you can help at home. In the club, your child practices at just the right level, about five minutes a day, and you get parent-friendly reports as they grow. Learn more about how it works →
Practice naming triangles, hexagons, cubes, and more
Questions at your child's level, about five minutes a day, on naming triangles, hexagons, cubes, and more and whatever PK-5 skills they need to develop. Unlimited practice, free forever.
Join the club