What is a 9 sided shape called?

Find the equation of the circumscribed circle of the triangle formed by three lines given by x+y=6, 2x+y=4 and x+2y=5.

I know them but im stuck on applying them

how do i show two circles intersect by using the radius ?

r = 2 sin (2 theta)

I am writing a program that draws a rose curve. So far I can only draw a circle. Basically from 0 to 360 degrees, it draws a point at (Cos(degree), Sin(degree)), but no idea how to implement a rose curve in this format.

which solid has the smalles surface area?

a square has a vertex on each coordinate axis, a vertex at (19,99), and a vertex at (x,y). Find the value of the ordered pair (x,y)

How are a parallelogram and a rhombus alike?

how do you find the area of an irregular 6 sided shape

How many sides and corners does a rectangle have?

how would you explain a hexagon being important in every day life.

Ok so basically you have a 100 square and inside it you make a 2x2 square so then you times the opposite corners, 46x57, 47x56 then you take them away giving you a difference of 10. Now I need to find NxN and I'm just likee whaaaat! Help me!!

If you are given quadrilateral DEFG as marked (a quadrilateral with 4 congruent sides is the only thing marked), what additional information is most helpful if you want to prove that the figure is a square?

A.) Line DF bisects both

what can be done to align a 3 by 4 and a 4 by 3 retangle to match each other?

What is the name of a 5 sided shape?