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Geometry
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Gravity
Terms in this set (43)
angle
2 rays meeting at a common endpoint
vertex
commom point where 2 rays meet
degrees
the unit of measure used to measure angle
right angle
an angle that measures 90 degrees
straight angle
an angle that measures 180 degrees
acute angle
an angle that measures greater than 0 degrees smaller than 90 degrees
perpendicular lines
lines that meet at a right angle
intersecting lines
meet at a common point
obtuse angles
an angle that measures is greater than 90 degrees smaller than 180 degrees
supplementary angles
sum of 2 angles = 180 degrees
adjacent
side by side
adjacent angles
share a common ray
equilateral
all sides congruent
isosceles
2 sides congruent
scalene
no sides congruent
acute triangle
all acute angles
right triangle
one right angle
obtuse triangle
one obtuse angle
polygons
a closed figure formed by 3 or more line segments
poly
many
gons
sides
regular polygon
a polygon where all sides and angles are congruent
congruent
line segments or angles that are the same
triangle
3 sides
quadrilateral
4 sides
pentagon
5 sides
hexagon
6 sides
heptagon
7 sides
octagon
8 sides
nonagon
9 sides
decagon
10 sides
dodecago
12 sides
diagonal
line segment that connects 2 opposite vertices in a polygon
perimeter
distance around a geometric figure
area
number of square units needed to cover its surface
180 (n-2)
formula for the degrees of a polygon
A= S2
area of a square
P= b2 + h2
perimeter of a rectangle
A= b x h 1/2
area of triangle
P= 4s
perimeter of a square
A= (b1 +b2) x 1/2 h
area of a trapezoid
A= b x h
area of parallelogram
A= b x h
area of a rectangle
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