Is this equation standard form of an ellipse or circle?
-3x^2-3y^2-12x-12y+24=0
what's the center?

The standard form equation for a circle is



where (h, k) is the center and r is the radius.

The standard form equation for an ellipse is



(center h, k and major and minor axes a and b)

This equation is standard form for neither, but might be general form for one.

This polygon has 4 sides
180(4-2) = 180(2) = 360 degree
80+90+2x + 3x = 360
170+5x = 360
5x = 190
x= 38
measure of angle t is 2(38)= 76
the answer is c. trust me
hope this !

Ithink the right answer could be 50%