BetaCalculus Corner is in beta: things may change while we test, and payments aren't open yet.

© Calculus CornerGetting started Terms Privacy Contact

Chapter 01Basic Math

0101.01Addition, Subtraction, Multiplication, and Division
0201.02Exponents and Roots
0301.03Rates, Ratios, and Proportions
0401.04Percentages
0501.05Variables and Expressions
0601.06Equations and Inequalities
0701.07Graphing
0801.08Sets
0901.09Number Systems
1001.10Intervals
1101.11Angles
1201.12Planar Shapes
- Polygons
- Perimeter and Area
- Circles and Ellipses

Chapter 01 · Basic Math

0101.01Addition, Subtraction, Multiplication, and Division
0201.02Exponents and Roots
0301.03Rates, Ratios, and Proportions
0401.04Percentages
0501.05Variables and Expressions
0601.06Equations and Inequalities
0701.07Graphing
0801.08Sets
0901.09Number Systems
1001.10Intervals
1101.11Angles
1201.12Planar Shapes
- Polygons
- Perimeter and Area
- Circles and Ellipses

Topics / 01 Basic Math

01.12

Planar Shapes

Polygons and their angles, perimeter and area formulas, and the geometry of circles and ellipses.

About 15 minutes

You'll learn to

→Find the angle sum of a polygon
→Compute perimeter and area of common shapes
→Use circle and ellipse formulas

← 01.11 Angles 02.01 Functions →

Semester Pass

Unlock this lesson and every other topic

The full explanation, videos and 6 practice problems for this lesson are part of the Semester Pass: $49 once for 4 months of full access. No subscription, nothing renews.

Create a free account What's included

The first section of every chapter is free. Try 01.01 Addition, Subtraction, Multiplication, and Division.