Lines of latitude and longitude.
longitude and latitude
These are both polar regions.
The main line of latitude is called parallel. These lines would include the equator, Tropic of Capricorn, Tropic of Cancer, Antarctic Circle and the Arctic Circle.
The Scandinavian countries (Norway, Sweden and Finland) are each called The Land of the Midnight Sun. Technically the territory above the Arctic Circle and below the Antarctic Circle are the lands of the midnight sun but they aren't countries.
They are called cul de sacs or dead ends.
North of the Antarctic circle is basically what you see on the bottom of flat maps. The waters are called the South Pacific, the South Indian and the South Atlantic oceans.
circle pattern
a hemisphere
semicircleA half circle is called a semicircle.Half a circle is a semi-circle
This pattern is a sequence of shapes -- circle, square, circle, square, circle
A part of a circle between two points on a circle is called is called an arc.
Half a circle is called a semi-circle. Sometimes it is called a half-moon.
The inside of a circle is called its area.
The inside of a circle is called its area.
the interior of a circle is called a cabret
A squashed circle is called an elipse.
A quarter of a circle is called a Quadrant.
Half a circle is called a "semicircle" in geometry.