Lesson 4: Geometry And Data Interpretation

Question 1

Ratio of Side Lengths in 30/60/90 Triangle

Answer 1

X=Opposite 30 degrees
X (Square Root of 3)=Opposite 60
2x= Opposite 90

Question 2

Common Right Triangles

Answer 2

3,4,5 and multiples (6,8,10…)
5,12,13 and multiples (10,24,26…)
8,15,17 and multiples (16,30,34…)

Question 3

Inscribed Angle

Answer 3

Always half the measure of the Central Angle

Question 4

Isosceles Triangle

Answer 4

2 sides of equal length

Question 5

Equilateral Triangles can be broken into…

Answer 5

Two 30,60,90 Triangles

Question 6

45,45,90 Right Triangle

Answer 6

X,X,X(square root of 2)

Question 7

Line Formula

Answer 7

Y=mx+b

Y=y-coordinate
X=x-coordinate
M=slope of line=rise/run=change in y/change in x
B=y-intercept of that line (point where line crosses y-axis)

Question 8

Vertex Parabola Equation

Answer 8

Y=a(x-h)squared + k

Vertex is (h,k): bottom of the parabola.

If a is positive, U shape goes up

If a is negative, U shape goes down