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Tribhuj ke Altitude

Class 7 Maths · Chapter 7: Teen Kaat'ti Lines ki Kahaani · NCERT Ganita Prakash section 7.4

Seekho

Ped ya vyakti ki oonchaai zameen se 90° par seedhe upar naapi jaati hai. Shirsh A ki bhuja BC se oonchaai A se BC par lamb AD ki lambaai hai. Ye khand AD tribhuj ka altitude hai.

Har tribhuj ke teen altitude hote hain, har shirsh se saamne ki bhuja tak ek (AD, BE, CF). "Tribhuj ki oonchaai" se matlab us bhuja tak ka altitude jise aadhaar chuna.

Agar tribhuj jhuka ho, to altitude ka paair BC ke bahar gir sakta hai. Tab BC ko badhaao aur badhaayi line par lamb giraao. Kaagaz modkar, tribhuj ko aise modo ki aadhaar shirsh se hokar apne upar mude: silvat altitude hai.

Theek se: aadhaar ke saath ruler aur us par khiskta set square jab tak khada kinaara shirsh tak na pahunche; us kinaare se kheencho. Right-angled tribhuj mein right angle ki do bhujaayein pehle se perpendicular, to har ek altitude hai.

Explore: altitude kheenchna.

  1. A se altitude kheenchne ke steps kram mein lagao.

Yaad rakho

  • Altitude shirsh se saamne ki bhuja (zaroorat ho to badhaayi) par lamb hai.
  • Tribhuj ke teen altitude; ruler aur set square se kheencho.

Quick check

Kis tribhuj mein ek bhuja altitude bhi ho sakti hai?

  1. right-angled
  2. samabahu
  3. har vishambahu
  4. kisi mein nahi
Answer

right-angled. Right angle wali bhujaayein ek doosre par lamb hain.

Socho

Neel 140° ∠R wala tribhuj TRY banaata hai. T se RY par altitude kahan girega?

Ek answer

RY ke bahar: tribhuj R se aage jhuka hai, to YR ko R se aage badhaao aur T se us par lamb giraao.

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.