WikiVisually
Infinite photos and videos for every Wiki article · Find something interesting to watch in seconds
Presidents Celebrities Rare Coins Wonders of Nature Great Museums Largest Palaces British Monarchs Recovered Treasures Countries of the World World Banknotes Ancient Marvels Wars and Battles Great Artists Orders and Medals Supercars Largest Empires Kings of France Richest US Counties History by Country Great Cities Sports Animals Famous Castles Best Campuses Crown Jewels Tallest Buildings
more top lists
History
Perimeter
Videos
Page
A perimeter is a closed path that encompasses, surrounds, or outlines either a two dimensional shape or a one-dimensional length. The perimeter of a circle or an ellipse is called its circumference.
The Neuf-Brisach fortification perimeter is complicated. The shortest path around it is along its convex hull.
The Neuf-Brisach fortification perimeter is complicated. The shortest path around it is along its convex hull.
Circle
Videos
Page
A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre. The distance between any point of the circle and the centre is called the radius.
Circular cave paintings in Santa Barbara County, California
Circular cave paintings in Santa Barbara County, California
Circles in an old Arabic astronomical drawing.
Circles in an old Arabic astronomical drawing.
The compass in this 13th-century manuscript is a symbol of God's act of Creation. Notice also the circular shape of the halo.
The compass in this 13th-century manuscript is a symbol of God's act of Creation. Notice also the circular shape of the halo.