Compass se circle kaise banayein

Compass kya karta hai?

Compass ke do pair upar se jude hote hain. Ek pair ke sire pe nukeeli needle hoti hai, doosre mein pencil. Jab needle ek jagah tiki rehti hai, to pencil sirf un points pe chal sakti hai jo needle se barabar door hon. Isiliye compass circle aur circle ke hisse, jinhe arc kehte hain, banata hai. Ye lambai copy bhi kar sakta hai: ek line ki lambai jitna kholo aur wahi lambai doosri line pe mark kar do.

P se barabar door points

Apni notebook mein ek point P mark karo. Ab alag-alag dishaon mein jitne ho sake utne points mark karo jo P se 4 cm door hon. Har ek ko ruler se naap sakte ho, ya compass ko 4 cm khol ke uski pencil se points mark kar sakte ho.

Socho ki aise saare points mark kar diye. Wo judkar ek gol curve banate hain: circle. P circle ka centre hai, aur centre se circle ke kisi bhi point tak ki doori radius hai. Yahan radius 4 cm hai. Circle pe ka point P se theek 4 cm door hai, andar ka point 4 cm se kam door, aur bahar ka point 4 cm se zyada door.

4 cm radius ka circle banane ke steps

1. Nukeeli pencil se centre P mark karo.
2. Ruler ko seedha bichhao. Compass ki needle 0 ke nishaan pe rakho aur pair tab tak kholo jab tak pencil ki nok 4 cm ke nishaan pe na aa jaaye.
3. Needle ko P pe rakho aur halka sa dabao taaki khisake nahi.
4. Compass ko upar se pakad ke pencil ko poora ghumao, jab tak curve band na ho jaaye.

Circle check karne ke liye uspe kuch points mark karo aur ruler se unki P se doori naapo. Har ek 4 cm honi chahiye.

Compass se artwork

Circle banana aa gaya, to bahut si tasveerein aasaan ho jaati hain, aur haath se bani drawing se zyada saaf dikhti hain:

• Do chhoote hue circles: same radius, jaise 2 cm, aur centres 4 cm door (do radius jitne).
• Circle ke andar circle: ek hi centre, do alag radius, jaise 2 cm aur 1 cm.
• Ek line mein overlap karte circles: same radius, aur centres do radius se thoda kam door, jaise 2 cm ke circles jinke centres 3 cm door hon.

Wavy Wave

Wavy Wave do barabar half circles hain, ek line ke upar aur ek neeche. Beech wali line AB = 8 cm lo. Pehli wave AX pe half circle hai aur doosri XB pe, isliye X, AB ke beech mein hai aur AX = 4 cm. 4 cm pe bane half circle ka centre us lambai ke beech mein hota hai, isliye radius 2 cm hai. Needle ko A se 2 cm pe rakh ke A se X tak upar wala half circle banao; phir A se 6 cm pe rakh ke X se B tak neeche wala half circle banao.

Kisi aur lambai ke liye radius AB ka chautha hissa hai: AB = 6 cm pe 1.5 cm, aur AB = 10 cm pe 2.5 cm.

A Person aur Eyes

Kuch curves do diye gaye points se guzarni chahiye par half circle nahi hoti, jaise ‘A Person’ mein body ka curved upar wala hissa ya aankh ke do curves. Tab compass ki nok dono points se barabar door honi chahiye, isliye wo dono points ke beech se guzarne wali line pe hoti hai, jo unhe jodne wali line ke saath 90° banati hai. Ek radius fix karo jo dono points ki doori ke aadhe se bada ho, aur nok ko is beech wali line pe tab tak khiskao jab tak curve dono points se na guzre.

Jaise, 4 cm door do points ke liye nok ko unke beech ke point se 1.5 cm door rakho aur compass 2.5 cm kholo: arc dono points se guzarta hai aur sirf 1 cm uthta hai. Aankh ke liye ek curve nok ko line ke neeche rakh ke banao aur doosra line ke upar, barabar doori pe, taaki aankh symmetrical bane.

Aage, compass se ekdum sahi square aur rectangle banana seekho rectangle aur square kaise banayein mein.