Geometry Flashcards
What letters should you look for to find alternative angles?
Z and S
What letters should you look for to find co-interior angles?
c
What are corresponding angles in relationship to each other?
Equal
What are co-interior angles in relationship to each other?
180
What does it mean for a shape to be regular?
All sides are the same shape and all angles are the same size
What do an interior angle and an exterior angle add up to?
180
What do the exterior angles of a polygon add up to?
360
figure formed by
2 rays
sphere volume
4/3 pi radius 3
type of shape arrowhead
quadrilateral
Bearings direction
clockwise
bearings how many figures
3
Formula for sector
degrees/360 x area of circle
Area of segment
sector area - triangle
triangle formula in a segment
1/2 ab sine c
Sine rule applies to
non right triangle
Cosine rue applies to
non right triangle
sine rule
sine a/a=sineb/b= sine c/c
sine rule sets called
matching sets
get x in sine
fill in formula should get one pair times by one left
get x in sine
x on own
inverse sine
sin -1
volume Regarding what shape
3d
Formula for prism
Cylinder a Prism?
Area time height
yes
bisect means
Splits into 2
Circle theorem 1
An inscribed angle a° is half of the central angle 2a°
A “Cyclic” Quadrilateral
every vertex on a circle’s circumference
Area of circle
Pi radius squared
Point made by three lines in a circle
Apex
Angle in a Semicircle know as
(Thales’ Theorem)
Tangent
touches one part
What is the rule for tangents and a radius?
A tangent and a radius meet to make 90*