Formulas
Quadrilaterals on a Graph
Equation of a Circle
Arc Length
Sector Area
100
A diameter is how much larger than a radius?
2 times as large
100
What shape is this? What do you notice about lines EF and DG?
Rhombus, they are parallel & congruent.
100
(h,k) represents what in the equation of a circle?
The Center
100
What is the formula for Arc Length
2*pi*r*theta/360
100
What is the formula for the area of a sector?
pi*r^2*theta/360
200
What is the distance formula?
sqrt((x2-x1)^2+(y2-y1)^2
200
What shape is this?
Parallelogram
200
What is the radius of this circle?
(x-5)^2+(y+7)=64
8
200
What is the arc length?
60.5 ft
200
What is the sector area?
52.4 in2
300
Find the distance between the two points.
(11,-2) & (-4,1)
15.3
300
What is the difference between a square and a rhombus? What formula could you use to prove that on a graph?
Rhombii have no 90 degree angles, slope.
300
What is the center of this circle?
(x+3)^2+(y-5)^2=49
(-3,5)
300
What is the arc length?
61.3 ft
300
What is the area of the sector?
11.8 m2
400
How do you find slope?
Rise/Run
400
What shape is this? How do you know?
Trapezoid, it has only one set of parallel lines.
400
Write the equation of a circle with
center: (1,-10)
and
radius: 5
(x-1)^2+(y+10)^2=25
400
What is the length of the arc?
18.8 cm
400
Find the area of the sector with
26.7 km2
500
Find the distance between the two points.
(1,3) & (-5,7)
7.2
500
Parallel lines have ________ slopes, while perpendicular have _________ slopes.
same, negative reciprocal.
500
What is the equation of this circle?
Center=(-2,0)
Diameter=20
(x+2)^2+y^2=100
500
What is the length of the arc?
20.9 m
500
Find the area of the sector
96.2 mi2
600
(-1,0)