Lessons on 2D Shapes
THINGS TO REMEMBER > FORMULAS
Download And Print Area And Perimeter Formulas Of 2-Dimensional Shapes
Download and print PDF sheets of list of formulas of the area & perimeter of 2-dimensional shapes in geometry. A Helpful summary to keep handy for exams.
Table of contents
- Important area formulas of 2D shapes
- Perimeter formulas of 2D shapes
Rupinder Kaur
Aug 18, 2026
2D Shapes Area Perimeter
GEOMETRY > FUNDAMENTALS OF GEOMETRY
Circle's Radius, Diameter, Chord And Tangent
What is a circle? Know about its diameter, arc, secant, sectors and segments. Practice questions on recognizing its parts by solving free worksheets.
Table of contents
- Center and radius
- Diameter
- Chord
- Secant
- Tangent
- Arcs of circle
- Sectors of circle
- Segments of circle
- Semi circle
Rupinder Kaur
Jul 14, 2026
2D Shapes
GEOMETRY > FUNDAMENTALS OF GEOMETRY
Circle's Circumference And Area Of Sectors And Segments
Learn how to calculate the area & circumference of a circle. Refer the list of formulas to find areas of the sector, segment, semicircle & length of arc.
Table of contents
- Circle
- Semi circle
- Area of minor sector
- Area of major sector
- Area of minor segment
- Area of major segment
- Length of arc
- Formulas list of areas & perimeters
Rupinder Kaur
Aug 18, 2026
2D Shapes Area Perimeter
GEOMETRY > FUNDAMENTALS OF GEOMETRY
Point, Line, Ray, and Plane In Geometry
Definitions of point, line, ray, line segment, and the plane in geometry. Learn to name the different types of lines in free worksheets.
Table of contents
- Point
- Line
- Ray
- Line segment
- Plane in geometry
- Intersecting lines
- Perpendicular lines
- Parallel lines
- Transversal line
- Concurrent lines
- What are collinear points?
Rupinder Kaur
Aug 18, 2026
2D Shapes Coordinate Geometry Lines
GEOMETRY > FUNDAMENTALS OF GEOMETRY
Polygon's Types And Classification Based On Sides
Start learning with vertices, angles & sides of polygon. Know the types like convex, concave, pentagon, hexagon etc. Practice problems to find the angles.
Table of contents
- Curve
-
Polygon
- Adjacent sides
- Adjacent vertices
- Diagonals
-
Types of polygon
- Convex polygon
- Concave polygon
- Regular polygon
- Irregular polygon
- Simple polygon
- Types based on number of sides
Rupinder Kaur
Aug 18, 2026
2D Shapes
GEOMETRY > GEOMETRY THEOREMS
Pythagoras Theorem's Statement, History And Real Life Applications
What is the statement of Pythagoras theorem? How is it used to solve the shortest distance & ladder length problems? Know about its history & applications.
Table of contents
- History
- Statement
- Real life applications
- Ladder length problem
- The shortest distance problem
Desh Bandhu
Aug 18, 2026
2D Shapes
GEOMETRY > FUNDAMENTALS OF GEOMETRY
Quadrilateral's Sides, Diagonals And Its Types
Learn the definitions of different types of quadrilateral like a parallelogram, rectangle, rhombus, & more. What are their diagonals and adjacent sides?
Table of contents
-
Quadrilateral
- Adjacent sides
- Opposite sides
- Diagonals
-
Types of quadrilateral
- Parallelogram
- Rectangle
- Square
- Rhombus
- Trapezium
- Shape of isosceles Trapezium
- Shape of kite
Rupinder Kaur
Aug 18, 2026
2D Shapes
GEOMETRY > FUNDAMENTALS OF GEOMETRY
Area And Perimeter Of Parallelogram, Rectangle, Rhombus And Trapezium
Learn formulas and calculations of area and perimeter of quadrilaterals like parallelogram, rectangle, square, rhombus and trapezium.
Table of contents
- Perimeter of quadrilateral
- Area of quadrilateral
- Perimeter of parallelogram
- Area of parallelogram
- Perimeter of rectangle
- Area of rectangle
- Perimeter of square
- Area of square
- Perimeter of rhombus
- Area of rhombus
- Area and perimeter of rhombus with diagonals
- Perimeter of trapezium
- Area of trapezium
Rupinder Kaur
Aug 18, 2026
2D Shapes Area Perimeter
GEOMETRY > FUNDAMENTALS OF GEOMETRY
Triangle And Its Types Based On Size Of Sides And Angles
Start with learning the sides, vertex, and angles of a triangle. Know the different types based on the length of its sides and size of angles.
Table of contents
- Definition
- Number of sides
- Vertices
- Angles
- Types based on sides length
- Types based on size of angles
Rupinder Kaur
Aug 18, 2026
2D Shapes Angles
GEOMETRY > FUNDAMENTALS OF GEOMETRY
Area And Perimeter Of Different Types Of Triangle
Learn formulas and practice how to calculate area and perimeter of isosceles and equilateral triangles with solved examples and free worksheets.
Table of contents
-
Perimeter
- Triangle
- Equilateral triangle
- Isosceles triangle
-
Area
- Area of triangle
- Area of equilateral triangle
- Area of isosceles triangle
Rupinder Kaur
Jul 18, 2026
2D Shapes Area Perimeter
