Trigonometry
Sine = ____ / ______
opposite/hypotenuse
What is a tangent line?
A line that touches the circle at one point
Describe SAS congruency
two sides are congruent as well as the angle between the two sides
for i in range (3):
forward(100)
right(120)
or something similar
Define congruent angles
The same angle measure
Cosine = ____ / ______
Adjacent / hypotenuse
What is the parallel chord theorem
Parallel chords subtend equal arcs
What is the difference between triangle similarity and congruency?
congruency - same side, same angles
similarity - proportional sides, same angles
If
Xn=3+Xn-1
X0=2
x1= ???
5
Define supplementary angles
Add to 180, next to each other, make a straight line
Tangent = ____ / _____
opposite / adjacent
What is the difference between a secant line and a chord
Both touch the circle at two points, but a chord is only inside the circle and a secant goes outside he circle
SSS, SAS, ASA, AAS, HL
Solve the summation (Ms. Chambers will write on the board)
sum i=1 to 10 of 3i
165
What is the polygon interior angle theorem?
(n-2)180 or 180n-360
If the hypotenuse of a triangle equals 3 inches and the opposite side equals 1.5 inches, what is the measure of the angle?
30 degrees
What is the difference between an inscribed angle and a central angle?
Central angle is made of two radii, inscribed angle is 3 points on the circle
Name the four triangle similarity theorems
SSS, SAS, AA, HL
Write a while loop to draw a square
i=0
while i<4
forward(10)
left(90)
i=i+1
or something similar
What is the sum of the interior angles of a hexagon?
720
A 13 foot ladder is placed on level ground up against a building. If the angle of elevation of the ladder is 40 degrees, how far from the side of the building is the foot of the ladder?
9.95 feet
If I have an inscribed angle of 45 degrees, what is the measure of the arc?
90 degrees
Why is there no ASA or AAS similarity theorem
They are 'combined to make AA similarity (no side needed for similarity)
Describe what a harmonic sequence does
Converges to a middle number
What is the measure of one interior angle of a regular octogon
135 degrees