Write a paragraph describing the relationship between triangles and circles. be sure to include a description of the different centers a triangle can have.

The relations ship of the circle and triangle is that a ngles and points on the circumference of a circle are the same thing. a point on the unit circle is the same as a right triangle formed by a radius to the point and its perpendicular to the x-axis. hence sines and cosines which come from ratios of legs of a right triangle to the length of the hypotenuse are also the coordinates of the point on a circle of radius one. i hope this would you. 

Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table