Solid shapes are 3D objects that have length, width, and height. Unlike flat shapes, you can hold them in your hand!
Simple Difference:
2D Shapes: Flat, have only length and width
Examples: Square, circle, triangle (drawn on paper)
3D Shapes: Solid, have length, width and height
Examples: Cube, sphere, cylinder (real objects)
In Your School Bag:
• Pencil box = Cuboid or rectangular prism
• Water bottle = Cylinder
• Eraser = Cuboid or cube
• Ball = Sphere
In Indian Monuments:
• Taj Mahal dome = Hemisphere
• Qutub Minar = Cylinder
• Temple shikharas = Cone
• Fort walls = Cuboids
In Kitchen:
• Sugar cube = Cube
• Biscuit tin = Cylinder
• Ice cream cone = Cone
• Football = Sphere
Cube:
6 square faces, 12 edges, 8 corners
Examples: Dice, sugar cube, Rubik's cube
All faces are equal squares
Cuboid:
6 rectangular faces, 12 edges, 8 corners
Examples: Book, brick, matchbox
Opposite faces are equal rectangles
Cylinder:
2 circular faces, 1 curved surface
Examples: Pipe, candle, drum, can
Rolls smoothly like a wheel
Cone:
1 circular face, 1 curved surface, 1 vertex
Examples: Ice cream cone, birthday cap, funnel
Tapers to a point
Sphere:
No faces, no edges, no corners
Examples: Ball, globe, marble, orange
Perfectly round in all directions
Different Views:
• Top View: Looking from above
• Front View: Looking from front
• Side View: Looking from side
Architects use these views to design buildings!
Example: A House
Top view = Shows roof shape
Front view = Shows door and windows
Side view = Shows depth of house
In this chapter, we will learn:
Visualising solids helps us:
For Class 7 Students (NCERT & JKBOSE)