Unit 4 Flashcards
what do interior angles add up too
180(n-2)
what do exterior angles add up too
360
what does the centroid do
cuts the median into 2 pieces, once piece is twice as long as the other
what does the median do
divides the triangle in half
what are the properties of quadrilaterals
angles, diagonals, and if the shape can be bisected or not
how to find the properties of quadrilaterals
draw the shape and look at the diagonals and angles
how to find the area of a composite shape
- identify simple shapes
- determine the de mentions
- calculate area
- add or subtract the areas
how to find perimeter of a composite shape
- identify simple shapes
2. add up ALL the outer dimensions of the shape
what’s the formula to find the perimeter of a 4 sided shape
4
how do you find the area of a 4 sided rectangle
L= ⬛️root of A
how do you calculate the perimeter of a 3 sided rectangle
4
L=2w
how do you find the area of a 3 sided rectangle
A=2w squared
L= 2w
what angle theorems are there?
Supplementary (SAT)
Complimentary (CAT)
opposite (OAT)
transversal (TPT-Z, F, C)
