A variable is a letter that replaces an unknown number.
It is said the blue card is a rectangle, so you don’t have to minus the inside rectangle. :)
We will use the property :
sum of interior angles on same side of transversal =180
(8x-14) + (2x+54)=180
10x+40=180
10x=140
x=14
(5,7),(2,1)
slope = (1 - 7) / (2 - 5) = -6/-3 = 2 <==
<span>Yes, it's true.
That is the definition of the radius: The segment that connects any point on the circle with the center of the circle</span>
