Trig Ratios
Similarity&Congruence
Transformations
Everything Else
Back to Basics
100
What is the phrase we use to help us remember our Trigonometric Ratios?
SohCahToa
100
What does it mean when two shapes are similar?
same shape, different sizes
100
(x , y) --> (-x , y) is what type of transformation?
reflection
100
How do we write out the Pythagorean Theorem?
a2+b2=c2
100
Part of a line that consists of two points, called endpoints.
What is a line segment?
200
What does the C in Cah stand for?
Cosine
200
CPCTC
Corresponding Parts of Congruent Triangles are Congruent
200
I multiply to corresponding sides to help your pre-image become the image. What am I?
Scale Factor
200
How many vertices does a rectangular prism have?
8
200
Part of a line that consists of a point called an endpoint and all points on the line that extend in one direction.
What is a ray?
300
What ratio is equal to
(opp)/(adj)
Tangent (or Tan)
300
What are two of the three similarity Theorems
AA Theorem, SSS Theorem, SAS Theorem
300
Point P(1,2) is rotated 90 degrees counterclockwise.
What is the image P' ?
P'(-2,1)
300
The equation of a given circle is (x-2)2 + (y+3)2 = 4.
What is it's center and radius?
center: C(2,-3)
radius: r= square root of 4= 2
300
Two dimensional and extends without end, even though the drawing appears to have edges.
What is a plane?
400
Which Trigonometric Ratio should I use to solve for Angle B?
Cosine (Cos)
400
Are these two triangles similar? How do you know?
yes, SAS theorem.
400
Point C(-3, 1) is translated 5 units to the right and 7 units down. What will be its image?
C'(2,-6)
400
If the area for a parallelogram is 72 square inches and the base is 8 inches, what is the height?
9 inches
400
Two angles that add up to 180 degrees
What are supplementary angles?
500
Solve for Angle A.
66.4 Degrees (or about 66)
500
A triangle is dilated by a scale factor of 1/3 to produce a new triangle. What will happen to the perimeter of the new triangle?
The perimeter of the new triangle will be 1/3 that of the original triangle.
500
A dilation rule D:(x,y)-->(3x,3y) is applied to a triangle with vertices A(1,4), B(6,3) and C(2,1). What will be the image A', B' and C'?
A'(3, 12)
B'(18, 9)
C'(6, 3)
500
A living room wall is 20 feet long, and 12 feet high. How much paint do you need to cover one wall?
240 square feet
500
A point that divides, or bisects, a segment into two congruent segments.
What is a midpoint?