Sine, Cosine and Tangent
Similarity
Dilations
Pythagorean Theorem and Special Right Triangles
Announcements
100
What ratio is equal to
(opp)/(adj)
Tangent (or Tan)
100
These are the three triangle similarity postulates
AA, SSS, SAS
100
What are the two things you need to describe a Dilation?
Scale Factor and Center
100
How do we write out Pythagorean Theorem?
a2+b2=c2
100
What day is the Geometry Final?
Thursday (6/9)
200
Which Trigonometric Ratio should I use to solve for Angle B?
Cosine (Cos)
200
List two properties of similar figures
1. corresponding angles are congruent
2. corresponding sides are proportional
200
I multiply to corresponding sides to help your pre-image become the image. What am I?
Scale Factor
200
What are the Two special right triangles we know about?
45-45-90 and 30-60-90
200
When is the last day to turn in non-Finals make up work?
Sunday June 5th
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
What does x equal? (remember your units)
6 cm
300
What are best ways of reviewing for regents?
Regents review books, regents from nysregents
400
Solve for Angle B to the nearest degree
angle B = 23
400
Which point is the Center?
Point B
400
45-45-90 triangles are half of which shape?
Square
400
How can you reach Mr. Sirlin with regents and finals questions
blackbaud, email
500
If sin(3x) = cos(6x) solve for x
x = 10
500
Are these two triangles similar? How do you know?
yes, SAS theorem.
500
What's the scale factor between these two triangles?
3 or 1/3
500
30-60-90 Right Triangles are half of which shape?
Equilateral Triangles
500
When is the geometry regents?
June 21 9:15