Sine, Cosine and Tangent
Triangles
Dilations
Formulas
Geometry Regents Facts
100
What ratio is equal to
(opp)/(adj)
Tangent (or Tan)
100
These are the three triangle similarity postulates
AA, SSS, SAS, ASA
100
What are the two things you need to describe a Dilation?
Scale Factor and Center
100
Pythagorean Theorem?
a2+b2=c2
100
How many different parts are on the Geometry Regents?
4 Parts
200
Which Trigonometric Ratio should I use to solve for Angle B?
Cosine (Cos)
200
45-45-90 triangles are half of which shape?
Square
200
I multiply to corresponding sides to help your pre-image become the image. What am I?
Scale Factor
200
Slope Formula
m = y2 - y1
x2 - x1
200
How many total questions are on the Geometry Regents?
35 Questions
300
For angle A you are given the opposite side and hypotenuse
Set up an equation to solve for the measure of angle A
angle A = sin-1 (O/H)
300
Are these two triangles similar? How do you know?
yes, AA Theorem.
300
What do we draw to typically help us find the Center?
Connecting lines
300
Area of a Sector
A = (Pi)r2(0/360)
300
How many multiple choice questions are in part 1?
24 Part 1 Questions.
400
Solve for Angle B to the nearest degree
angle B = 23
400
What does CPCTC stand for?
Corresponding parts of congruent triangles are congruent
400
Which point is the center?
point B
400
Distance Formula
d = SqRt (y2 - y1)2 + (x2 - x1)2
400
How many points is part 4 worth?
6 Points
500
What is the value of x (rounded to the nearest tenth)
232/440 = Cos x
x = 58.2
500
Are these two triangles similar? How do you know?
yes, SAS theorem.
500
What's the scale factor between these two triangles?
2 or 1/2
500
Volume of a pyramid
Pyramid: 1/3 B * H
500
When is the geometry regents?
June 21st