What are the Properties of Circumscribed Quadrilaterals?

[MadAsAdam]

1) Quadrillateral ABCD is circumscribed about circle O. AB=7, BC=11 DC=8. Find AD.

2) Find the center and radius of the equation: X(squared)-12x+y(squared)+14y+4=0

3) Find the intersection point(s) of the equations:
5x+6y=30
x(squared)+y(squared)=25

 

[Pere Callahan]

Welcome to PF

What is the question, what have you tried so far?

 

[MadAsAdam]

What is the question, what have you tried so far?

Alright i solved 1 of them. Now i still need to know...

1) Quadrillateral ABCD is circumscribed about circle O. AB=7, BC=11 DC=8. Find AD.

and

2)Find the intersection point(s) of the equations:
5x+6y=30
x^2+y^2=25

 

[MadAsAdam]

1) Quadrillateral ABCD is circumscribed about circle O. AB=7, BC=11 DC=8. Find AD.

and

2)Find the intersection point(s) of the equations:
5x+6y=30
x^2+y^2=25

 

[exk]

1) sketch a circle with a circumscribed quadrillateral. notice that the diameter can help you make a triangle.

2) try sketching the graphs. Both equations are of specific type so you will see the answer

 

[Pere Callahan]

And what are you thoughts on these two ..? We only can help you when you show how you tried to tackle the question to see where your problems are. For 2) drawing a picture might be a good start. We're not going to do your homework for you, and btw there is a homework help section here dedicated to this kind of question.

 

[Pere Callahan]

Can someone please merge these threads und move them to the homework section?