Jangka: Perbedaan antara revisi
Konten dihapus Konten ditambahkan
k robot Modifying: es:Compás (Geometría), it:Compasso (strumento) |
mengembangkan, hapus tag kembangkan |
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[[Gambar:Compass (drafting).jpg|thumb|Sebuah jangka]]
'''Jangka''' adalah alat untuk menggambar [[lingkaran]] atau [[busur]]. Alat ini juga dapat digunakan untuk mengukur jarak, terutama pada [[peta]]. Kompas digunakan dalam [[matematika]], [[gambar teknis]], [[navigasi]], dan lain-lain.
Compasses are usually made of [[metal]], and consist of two parts connected by a [[hinge]] which can be adjusted. Typically one part has a spike at its end, and the other part a [[pencil]], or sometimes a [[pen]]. Circles can be made by fastening one leg of the compass into the [[paper]] with the spike, putting the pencil on the paper, and moving the pencil around while keeping the hinge on the same [[angle]]. The [[radius]] of the circle can be adjusted by changing the angle of the hinge.
Distances can be measured on a map using compasses with two spikes. The hinge is set in such a way that the distance between the spikes on the map represents a certain distance in reality, and by measuring how many times the compass fits between two points on the map the distance between those points can be calculated.
[[Kategori:Matematika]]
[[cs:Kružítko]]
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