Home/Second Grade Math/Lesson 171
K-5 friendly lesson
One small step at a time.Read the idea, try the activity, and celebrate each win as you go.

Name Polygons (Up to 6 Sides)

πŸ›‘ The Greek Naming Code! Ancient scientists used secret code words to name shapes. "Poly-Gon" just means "Many-Corners".

Do this: Read the concept below, then try the quiz or activity.

Lesson 171 of 186

Concept

If a shape has straight, closed sides, it is a Polygon! Let's learn the names of the shapes by counting their sides.

🎯 The Polygon Dictionary:
* 3 Sides: Triangle ("Tri" means 3. Like a Tricycle! 🚲).
* 4 Sides: Quadrilateral ("Quad" means 4. Like a 4-wheel Quad bike! 🚜).
   * *(Squares and Rectangles are both just special types of Quadrilaterals).*
* 5 Sides: Pentagon ("Penta" means 5).
* 6 Sides: Hexagon. ("Hex" means 6. Both words have an 'X' in them! ⬑).

A STOP sign is none of these! A stop sign has 8 sides! (Octagon... like an Octopus! πŸ™).

Try it

Crack the shape names!

Instructions: Count the sides. Remember the secret Greek prefixes (Tri, Quad, Penta, Hex).

Problem 1: A perfect square has 4 sides. What is the fancy math word for a 4-sided shape? * "Quad" ___________

Problem 2: You look at a honeycomb from a bee hive. The shape has exactly 6 sides. What shape is it? * "H_________". (Remember the Xtrick!).

Problem 3: A shape has 3 straight sides. * Answer: _________

Problem 4: A shape looks like an L-block from Tetris. It has 6 sides (even though they bend weirdly). * Legally, what shape is that? * "H_________"

Complete & Continue β†’