Mixed Bag
Similarity
Dilations
Pythagorean Theorem and Special Right Triangles
Random
100
The endpoints of AB have coordinates A(-3,4) and B(5,2). If AB is dilated by a scale factor of 2 centered at (3,5), what are the coordinates of the endpoints of its image, A'B'?
A'(-9,3) and B'(7,-1)
100
What does it mean when two shapes are similar?
same Proportions, different sizes
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 Regents?
Wednesday (6/14)
200
Directed line segment AB has endpoints whose coordinates are A(-2,5) and B(8,-1). Determine and state the coordinates of P, the point which divides the segment in the ratio 3:2.
P= (4, 1.4)
200
What are two of the three similarity Theorems
AA Theorem, SSS Theorem, SAS Theorem
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
A circle is continuously rotated about its diameter. Which three-dimensional object will be formed?
A Sphere
300
The area of triangle TAP is 36 cm2. A second triangle, JOE, is formed by connecting the midpoints of each side of triangle TAP. What is the area of triangle JOE, in square centimeters?
9
300
Corresponding angles in similar triangles are what?
Congruent
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
Which polygon does not always have congruent diagonals?
Rhombus
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, AA Theorem.
400
Which point is the Center?
Point B
400
45-45-90 triangles are half of which shape?
Square
400
If the circumference of a standard lacrosse ball is 19.9 cm, what is the volume of this ball, to the nearest cubic centimeter?
133
500
Solve for Angle A.
66.4 Degrees (or about 66)
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
A jewelry company makes copper heart pendants. Each heart uses 0.75 in3 of copper and there is 0.323 pounds of copper per cubic inch. If copper costs $3.68 per pound, what is the total cost for 24 copper hearts?
$21.40