3 - Angles and Polygons Flashcards
1
Q
How do you work out exterior angles?
A
360 / n
2
Q
How do you work out interior angles?
A
180 - ext
or
((n - 2) x 180) / n
3
Q
What are the the four rules for congruency?
A
SSS S - Side
SAS A - Angle
ASA R - Right angle
RHS H - Hypotenuse
4
Q
What is the difference between similar and congruency?
A
Similar -> Same angles different size (Proportionately same)
Congruent -> Same angles and size (Identical)
5
Q
What are the four rules for angles on parallel lines?
A
Alternate (Z - shaped) Equal angles
Corresponding (F - shaped) Equal angles
Opposite (X - shaped) Equal angles
Co - interior (C - shaped) Angles add to 180
