Class 8 Maths – Chapter 10

Visualising Solid Shapes

STEP 7: Mind Map + Easy Memory Tricks

                                                

🧠 Mind Map – Visualising Solid Shapes

Solid Shapes (3D)

• 📦 Cube
• 📦 Cuboid
• ⚽ Sphere
• 🥫 Cylinder
• 🍦 Cone

Key Elements

• Face – Flat surface
• Edge – Line where faces meet
• Vertex – Corner point

Views of Objects

• Top View
• Front View
• Side View

Nets

• Flat pattern of a solid
• Helps in understanding shape formation

Maps & Rotation

• Location understanding
• Turning objects around an axis

🧩 Easy Memory Tricks

🔹 Trick 1: FEV Rule (Cube / Cuboid)

F – Faces | E – Edges | V – Vertices

Cube → 6 Faces, 12 Edges, 8 Vertices

🔹 Trick 2: “TV-FS” for Views

Top View → See from above

Front View → See from front

Side View → See from side

🔹 Trick 3: NET = OPEN SHAPE

Net means the solid is cut open and laid flat.

🔹 Trick 4: 3D = REAL LIFE

Anything you can hold → 3D object.

🔹 Trick 5: FACE is FLAT

If it is flat → it is a face.

🎯 Exam Use Tip

Remember formulas using tricks, draw neat diagrams, and clearly label faces, edges and vertices.