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38 terms

geometry test #1

STUDY
PLAY
point
an infinitely small exact location
3 undefined terms
point, line, plane
line
an infinitely long infinitely thin straight path
plane
an infinitely long infinitely wide fat surface
Axiom
a mathimatical statement which we except as true because no counter example exists
line segment
part of a line with two endpoints
ray
part of a line with one endpoint
collinear
a set of points that lie on a common line
any two points are collinear
axiom
intersection
two geometric figures points in common
parallel lines
two lines on a plane that will never intersect
skew lines
two lines that will never intersect but are not on the same plane
angle
two rays that share a common end point
degree
1/360 of a complete rotation
perpendicular
two lines that intersect at a right angle
vertical angles
two non adjacent angles formed by two intersecting lines
transversal
a line which intersects two given lines in a plane
pairs of corresponding angles
angles which: are on the same side of the transversal, one interior and one exterior, and non adjecent
alternate interior angles
both on interior, opposite sides of transversal, non adjacent
polygon
a closed figure made up of line segments with no interior reflex angles
regular polygon
a polygon with all congruent sides and all congruent angles
steps to finding perimeter
formula, substitute, simplify
isosceles triangle
a triangle with at least two congruent sides
scalene
all sides of the triangle are differnent
the sum of the measures of any triangles angles is 180
axiom
right triangle
a triangle with 1 right angle
obtuse triangle
a triangle with 1 obtuse angle
acute triangle
a triangle with all sides acute
parallelogram
a quadrelateral with both pairs of oppisite sides parallel
rectangle
a parallelogram with 4 congruent angles
trapizoid
a quadrelateral with exactly 1 pair of parallel sides
circle
the set of all points equidistant form a given point on a plane
radius
a segment joining the center to any point on the circle
chord
a segment with endpoints on the circle
arc
part of the circle
diameter
chord that passes through the center of the circle
circumference
the distance around the circle
central angle
vertex is center, sides are radii