<div align="justify" width="100%">This is a part of the interactive online tutorial for Geometry learning with the help of audio visual lessons. It has been created to help you learn the concept, perception with explanations and includes solution to practice questions from the topic of 'Polygons'. The mini-lessons here include: Getting started, Classifying Polygons, Interior and Exterior Angles of Polygons. </div>

- Mathematics > General
- Mathematics > Geometry

- Grade 9
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- Grade 12

Classify objects into given categories; count the numbers of objects in each category and sort the categories by count.

Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.

Classify two-dimensional figures in a hierarchy based on properties.

Understand that positive and negative numbers are used together to describe quantities having opposite directions or values (e.g., temperature above/below zero, elevation above/below sea level, credits/debits, positive/negative electric charge); use positive and negative numbers to represent quantities in real-world contexts, explaining the meaning of 0 in each situation.