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Chapter 1 Midterm VOCAB Review
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Terms in this set (30)
congruent
figures with the same measure
equiangular
a polygon with all angles congruent
supplementary angles
angles whose sum is 180 degrees
line
a figure made up of points that extends infinitely; has no width or thickness
line segment
a portion of a line with two endpoints
intersection
the points figures have in common
polygon
a closed, two-dimensional figure formed by line segments
obtuse angle
an angle more than 90 degrees but less than 180 degrees
equilateral
a polygon with all sides congruent
adjacent angles
angles that have a common vertex and side, but no common interior points.
ray
a portion of a line with one endpoint and extends infinitely in one direction
segment bisector
a figure that divides a segment in half
polyhedron
a solid figure formed by polygons
undefined term
a term that can only be explained using examples and descriptions
vertical angles
nonadjacent angles formed when two lines intersect
collinear
points on the same line
coplanar
figures on the same plane
linear pair
adjacent angles that form a line
regular polygon
a polygon that is both equiangular and equilateral
complementary angles
angles whose sum is 90 degrees
point
a location; does not have size or shape
perpindicular
lines that intersect to form right angles
acute angle
an angle more than 0 degrees but less than 90 degrees
space
the three-dimensional set of all points
mipoint
the point in the middle of a segment
plane
a flat surface made up of points and extends infinitely in two directions
angle bisector
a figure that divides an angle in half
angle
a figure formed by two rays with a common endpoint
right angle
a 90 degree angle
straight angle
a 180 degree angle
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