Formulas
Triangles
Circles
Angle Relationships
Random
100
What is the formula for the area of a triangle?
1/2 base x height
100
Solve for x.
x=13
100
What does the (h, k) and r stand for in the circle equation?
(h,k) is the center
r is the radius
100
Describe or draw alternate interior angles.
100
What does SOHCAHTOA stand for?
Sine, Opposite, Hypotenuse
Cosine, Adjacent, Hypotenuse
Tangent, Opposite, Adjacent
200
What is the formula for the area of a circle?
3.14 x r2
200
Solve for y and round to the nearest tenth.
y=8.9
200
The area of the square is 196. What is the circumference of the circle rounded to the nearest tenth?
C=44.0
200
What is it called when two angles are on a line and together, they add up to 180 degrees?
Linear Pair
OR
Supplementary
200
How do you get a perpendicular slope?
Opposite Reciprocal
300
What is the formula for graphing a circle?
(x-h)2 + (y-k)2=r2
300
Solve for x using Trigonometry. Round to the nearest hundredth.
x=4.38
300
What is the difference between a tangent and a secant of a circle?
A tangent only touches the circle once, and a secant goes through the circle while touching the circle twice.
300
What pairs are vertical angles? Name 2 pairs
1&3
2&4
5&7
6&8
300
A triangle undergoes a rotation of 180 degrees about the origin to form another triangle. Are the triangles congruent?
Yes, because rigid motion preserves angles and distances.
400
What is the formula for finding the partition?
(first number of ratio)(x2-x1)+x1
sum of ratio
400
What is the area of the triangle?
Round to nearest hundredths
Area = 45.96
400
What is the length of arc PQ? Round to the nearest tenth.
arc PQ = 9.4
400
What is the measure of angle i?
130
400
Which are the two that cannot make a pair of triangle congruent?
SSS, AAA, SAS, ASA, SSA, AAS
AAA, and SSA
500
What is the formula for Arc Length?
(angle/360) 2 pi r
500
What are the lengths of the legs
radical 50
500
What is the length of the arc PQ (rounded to the nearest tenth)?
28.3
500
Solve for y and x.
y = 40 degrees
x=67
500
Giant Eagle recently changed the size of their soup can, but kept the price the same. The original can had a diameter of 10 cm, and a height of 9 cm. The smaller can has a radius of 3.5 cm and a height of 7 cm. How much more soup does the first can hold?
About 437 cm squared more