19 terms

Geometry Ch. 1 Terms

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metric
centimeter is an example of length
line
lowercase script letter
collinear
Points on the same line
line segment
it has two endpoints and can be measured
supplementary
Two angles whose measures have a sum of 180°
customary
inch is an example of length
ray
one endpoint and extends indefinitely in one direction
obtuse
angle that measures between 90° and 180°
coplanar
Points on the same plane
plane
represented by a capital script letter
vertical
Two nonadjacent angles formed by two intersecting lines
vertex
common endpoint of an angle
perpendicular
lines that form right angles
complementary
Two angles whose measures have a sum of 90°
acute
angle that measures between 0° and 90°
linear pair
two adjacent angles whose opposite sides form a line
right
angle that measures 90°
bisect
cuts into two equal pieces
point
represented by a capital letter