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24 terms

Math Geometry vocabulary

Math vocabulary
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Point
a geometric element that has position but no extension
line
a straight path that extends without end in opposite directions
collinear
points that lie on the same line
non collinear
points that do not lie on the same line
ray
extend or spread outward from a center or focus or inward towards a center
end point
The point at the segment or ray
segment
part of a line
plane
an unbounded two-dimensional shape
parallel lines
coplanar lines that do not intersect
intersecting lines
lines that cross at one point
perpendicular lines
Lines that intersect to form right angles
skew lines
lines that lie in different planes. they are neither parallel or intersecting
midpoint
a point that divides a segment into two congruent segments
congruent segments
Segments that have the same length
angle
two rays with a common endpoint
vertex
The common endpoint of an angle
protractor
drafting instrument used to draw or measure angles
degrees
used to measure temperature, latitude, longitude, right ascsension, and declination
congruent angles
Angles that have the same measure
right angles
angles that measure 90 degrees
obtuse angles
angles more than 90 degrees
acute angles
angles that are less than 90 degrees
complementary angles
Two angles whose sum is 90 degrees
supplementary angles
Two angles whose sum is 180 degrees