Unit 5 Flashcards
What is a Polygon?
The general name for a 2D shape with straight edges
What do Co-Interior Angles add up to?
180°
What is a Regular Polygon?
A shape where all of its sides are the same length and all its angles are the same
What do Exterior and Interior angles on a point add up to?
180°
What is does the Sum of the Exterior Angles of any Polygon add up to?
360°
The Exterior Angle of a Regular Polygon = ?
360 / Number of Sides
The Sum of the Interior Angles of a Polygon = ?
(Number of sides - 2) x 180
How do you work out the length of a line segment?
√(x2 - x1)^2 + (y2 - y1)^2
sin(0°) =
0
sin(30°) =
1/2
sin(45°) =
1/√2
sin(60°) =
√3/2
sin(90°) =
1
cos(90°) =
0
cos(60°) =
1/2
cos(45°) =
1/√2
cos(0°) =
1
tan(0°) =
0
tan(30°) =
1/√3
tan(45°) =
1
tan(60°) =
√3
Where is the Hypotenuse?
Opposite to the Right Angle (Always the Lonest Side)
Where is the Opposite?
Opposite to the Angle
Where is the Adjacent?
Next to the Angle
SOH =
Sin = Opposite / Hypotenuse
CAH =
Cos = Adjacent / Hypotenuse
TOA =
Tan = Opposite / Adjacent
