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📚 Chapter Learning Kit

Area · Class 8 Mathematics · Ganita Prakash

English 3 topics 105 leveled MCQs 51 flashcards 5 games Free

Shared by a Veda teacher · Generated with Veda AI · Oct 2026

⚡ Veda Bites

The whole idea, one bite at a time

Veda Bites are swipeable micro-lessons — each one teaches exactly one idea. Here's a taste from this kit; the app has the full deck.

💡 Key Idea

Infinitely many ways

Four parts of equal area

Take any division of a square into four equal parts.

✏️ Example

Which design needs more powder

A rangoli question

Powder fills a region evenly, so this is a question about area.

💡 Key Idea

Twenty-eight against 24

Counting unit squares

Pack unit squares of side 1 cm into each without overlapping.

💡 Key Idea

One diagonal is enough

Any quadrilateral

Joining a diagonal cuts a quadrilateral into two triangles.

✏️ Example

Sixty-six square centimetres

A worked case

A diagonal of 22 cm with perpendiculars of 3 cm from the other two corners.

💡 Key Idea

Triangles all the way down

And any polygon at all

A pentagon falls into three triangles on two diagonals from one corner.

📖 Smart notes

What you'll study, topic by topic

1

Area, triangles, and why perimeter is not area

Area counts the unit squares a region holds. Perimeter measures the boundary instead, and the two can move quite independently of one another.

  • Area counts the unit squares a region holds.
  • A rectangle holds length times width of them.
  • A 7 by 4 rectangle holds 28 and an 8 by 3 holds 24.

~35 min · full explanation, examples & memory tricks in the app

2

Dissection, the parallelogram and the rhombus

Cut a figure up and rearrange the pieces and the area is untouched. That single idea turns a parallelogram into a rectangle, and a rhombus into one as well.

  • Any polygon can be cut into triangles by its diagonals.
  • So the triangle formula alone settles every polygon.
  • A quadrilateral splits into two triangles on one diagonal.

~35 min · full explanation, examples & memory tricks in the app

3

The trapezium, and area in real units

A trapezium breaks into a rectangle and two triangles, which gives half the height times the sum of the parallel sides. Real areas then need real units, and squaring a conversion is not the same as using it.

  • Dropping two perpendiculars splits a trapezium into three pieces.
  • The middle piece is a rectangle and the outer two are triangles.
  • Adding them gives half h times the quantity x plus y plus 2a.

~35 min · full explanation, examples & memory tricks in the app

❓ Leveled MCQ practice

Try the smart MCQs from this kit

105 questions laddered from warm-up to topper-level, each with an explanation. A taste:

The area of a region is properly understood as the number of

Beginner
A centimetres along the boundary of the region B straight sides the region happens to have C unit squares whose total matches the region D corners that the region happens to have
Show answer & explanation

unit squares whose total matches the region

Whole or fractional unit squares.

Because unit squares pack into a rectangle in neat rows and columns, the area of a rectangle always comes to its

Beginner
A length plus its width B length times its width C length minus its width D length divided by its width
Show answer & explanation

length times its width

Seven rows of 4 gives 28 of them.

Two rangoli rectangles are to be coloured evenly, one measuring 7 cm by 4 cm and the other 8 cm by 3 cm, so the number of unit squares in the first is

Beginner
A 28 B 24 C 22 D 11
Show answer & explanation

28

Seven times 4.

The second of those rectangles, measuring 8 cm by 3 cm, holds a number of unit squares equal to

Beginner
A 28 B 22 C 11 D 24
Show answer & explanation

24

Eight times 3.

🃏 Flashcards

Tap a card to flip it

51 flashcards in this kit — the app reviews them with spaced repetition so the right card returns on the right day.

🎮 Learning games

Play your way through this kit

Every game is built from this kit's own content — scores feed your mastery, so playing counts as studying.

Memory Match Word Match Categorization Fact Or Myth Sequence Builder Playable in the app

Study it properly — free, in the app

The full Veda Bites deck, complete notes, spaced-repetition flashcards, leveled MCQs, tests and games for this kit — plus Daily Facts and the Arena, every day.