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Squares aur Rectangles

Class 6 Maths · Chapter 8: Constructions se Khel · NCERT Ganita Prakash section 8.2

Seekho

Aas-paas dekho: kitaabein, darwaze, phone screen, cricket pitch. Zyaadatar rectangles hain. Rectangle ki 4 bhujaayein hoti hain, aamne-saamne ki bhujaayein barabar, aur chaaron kon right angle (90°).

Square ek khaas rectangle hai: chaaron kon 90° aur chaaron bhujaayein barabar. To har square rectangle hai, par har rectangle square nahi.

Sirf barabar bhujaayein kaafi nahi! Tenzin daandiyon ka square frame tedha kar deta hai. Bhujaayein ab bhi barabar hain, par kon 90° nahi rahe, isliye ab wo square nahi hai.

Explore: kona kheenchkar rectangle badlo aur bhujaayein dekho.

  1. 6 cm lamba aur 4 cm chauda rectangle banao.
  2. Ise 4 cm bhujaon wala square banao.
  3. 16 cm perimeter wala koi rectangle banao jo square na ho.

Yaad rakho

  • Rectangle: aamne-saamne ki bhujaayein barabar, saare kon 90°.
  • Square: saari bhujaayein barabar aur saare kon 90°. Har square rectangle hai.

Quick check

Rectangle ke liye kya hamesha sach NAHI hai?

  1. Saari bhujaayein barabar
  2. Aamne-saamne ki bhujaayein barabar
  3. Saare kon 90°
  4. 4 bhujaayein
Answer

Saari bhujaayein barabar. Saari bhujaayein sirf square mein barabar. Rectangle mein aamne-saamne wali barabar.

Socho

Gauri ke paas 20 cm ka dhaage ka loop hai. Wo usse rectangles banati hai. Kis rectangle ke andar sabse zyada jagah hai?

Ek answer

Har rectangle mein lambai + chaudai = 10 cm. 9 × 1 = 9, 8 × 2 = 16, 7 × 3 = 21, 6 × 4 = 24 aur 5 × 5 = 25 try karne par 5 cm × 5 cm ka square sabse zyada jagah rakhta hai.

Practice

Teen levels (easy, medium, hard) ke naye sawaalon se practice karo, kuch hands-on, hints aur hal ke saath. Topic poora karne ke liye pichhle 5 mein se 4 sahi karo.