Geo+Math
(n) the area of South America drained by the Amazon River and its tributaries.
Amazon basin
The fixed point is called the center of symmetry.
center of symmetry
well-regarded Persian ruler.
Cyrus
the flow of blood through the heart to the lungs and back to the heart
pulmonary circulation
A Slide, or Translation, moves all points of a figure the same distance in the same direction.
translation
(n) an economy that depends in large part on exporting goods and services
export economy
A triangle with all three sides of equal length
equilateral triangle
money in use or circulation
Currency
the largest veins in the human
vena cava
The angle of rotation is the rotational angle.
rotational angle
a right triangle that consists of two equal length legs
isosceles right triangle
A quadrilateral is a plane figure made with four line segments closing in a space.
quadrilateral
the process of making something conform to a standard.
Standardization
two lower chambers through which blood leaves the heart
ventricles
The fixed point is called the center of rotation.
center of rotation
When a figure rotates onto itself in 180 degrees, the figure has central symmetry.
central symmetric figure
in a direction opposite to that in which the hands of a clock rotate as viewed from in front
counterclockwise
Persian ruler who went to war with Greece.
Xerxes
the membranes between atria and ventricles to prevent the backflow of blood
valves
in the direction of the rotation of the hands of a clock as viewed from the front
clockwise
(n) a slum (poor) area in or near a city, especially in Brazil
favela
If a figure can be rotated less than 360 degrees about a point so that the image and the preimage are indistinguishable, then the figure has rotational symmetry
rotational symmetric figures
extension of a state's territory by encroaching on that of other nations, pursued as a political strategy.
Expansion
largest part of circulatory system, the flow of blood to all the organs and body tissues, except the heart and lungs, and returns to the heart.
systemic circulation
The number of degrees a figure rotates is the angle of rotation.
angle of rotation