Trigonometry
Which trigonometry ratio is formed by the sides
Opposite / Adjacent
Tangent
Are these triangles congruent? Why or why not?
False
What is the slope of a line perpendicular to
y = 4x - 5
- 1/4
What transformation occurs when a shape changes size?
Dilation
What is sin(45o)?
(square root 2)/2
or 0.707
What missing information would you need to prove that these two triangles are congruent using ASA?
AC is congruent to EC
(Or an equivalent claim)
True of false? If a shape is a square, then it is also a rhombus.
True
Find the slope between these two points
(5 , -3) and (7 , 3)
6/2 = 3
What transformation occurs when a shape keeps the same size and orientation, but slides to a new location.
Translation
Solve for x
Cos(x) = 8/17
61.93o
Are these triangles congruent? Why or why not?
No. SSA Fails.
Which quadrilateral has exactly one pair of opposite parallel sides?
Trapezoid
What is the slope of a line parallel to the line
2x + 3y = 6
-2/3
The point A (-3 , 4) is reflected across the y axis, where is the location of A' ?
(3 , 4)
Solve for x
Tan(32o) = 12/x
19.2
Construct a proof that the two triangles are congruent
Answer shown on board
If all you know about a shape is that it has opposite congruent sides, what's the most specific type of quadrilateral it can be?
Parallelogram
Find the equation of a line with a slope of 3 and passes through the point (2 , 5)
y - 5 = 3(x - 2)
or
y = 3x - 1
The point B (3 , -1) is rotated 90o Clockwise. Where is the location of B' ?
(-1 , -3)
If tan(x) = 15/8, then what is cos(x)?
Prove that AB is congruent to ED
Work shown on board
12
Find the equation of a line that passes through the points (1 , 2) and (5 , 0)
y - 4 = -1/2(x + 3)
or
y = -1/2x + 2.5
The point C is located at (-4 , 6). It reflects across the x-axis, and then translates x + 2, y + 1. Where is C' located?
(-2 , -5)