Vertical angles are angles that share a vertex and have sides that are opposite rays. That is, the opposites of the rays that form one of the angles are the rays that form the other angle.
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Where lines cross, two pairs of vertical angles are formed. In your diagram, those pairs are ...
∠TRV and ∠WRS . . . . one vertical angle pair
∠TRS and ∠WRV . . . . another vertical angle pair
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<em>Additional comment</em>
In this diagram, the ray RU is of no consequence with respect to any vertical angles. It can be ignored.
The vertical angles will each have one red ray and one blue ray as sides. These rays have end point R. No sides are shared.
I have never done a problem like this, so this is my first time attempting it.
The standard form for the equation of a circle is:
Begin by grouping the 'x' terms and 'y' terms:
Complete the square for the second polynomial:
Do the exact same process with the other polynomial:
Complete the square:
Bring the 121 to the other side to get:
The above expression is the equation of our circle in standard form. It is centered at the coordinates (7, -2) and has a radius of 11 units. The area of a circle if given by: