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math 7 vocab

geometry vocabulary test words

QuestionAnswer
the set of all points in a plane that are the same distance from a given point circle
lines that lie in different planes that are neither parallel nor intersecting skew
a straight path that extends without end in opposite directions line
a flat surface that extends forever plane
a part of a circle named by its endpoints arc
the point where two sides intersect vertex
lines that intersect to form right angles perpendicular lines
a part of a line that starts at one endpoint and extends forever ray
an angle that measures less than 90 degrees acute angle
line segment with one endpoint at the center of a circle, the other endpoint on the circle radius
having the same size and shape congruent
a part of a line between two endpoints line segment
two angles whose measures add to 90 degrees complementary angles
an angle that measures 180 degrees straight angle
The part of a circle enclosed by two radii and an arc connecting them sector
a figure formed by two rays with a common endpoint angle
a pair of opposite congruent angles formed by intersecting lines vertical angles
an angle whose measure is greater than 90degrees but less than 180 degrees obtuse angle
a line segment that passes through the center of a circle and has endpoints on the circle diameter
an exact location in space point
two angles whose measures have a sum of 180 degrees supplementary angles
the point inside a circle that is the same distance from all points on the circle center of the circle
an angle that measures 90 degrees right angle
lines in a plane that do not intersect parallel lines
a line segment with endpoints on a circle chord
a line that intersects two or more lines transversal
An angle formed by two radii central angle
a closed plane figure formed by three or more line segments. polygon
A line bounding a geometric figure side
The point where two sides of a polygon intersect vertex of a polygon
a polygon in which all sides are congruent and all angles are congruent regular polygon
a triangle that has no congruent sides scalene triangle
a triangle that has at least 2 congruent sides isosceles triangle
a triangle with all sides congruent equilateral triangle
a triangle with all angles less than 90 degrees acute triangle
a triangle that has one obtuse angle obtuse triangle
a triangle that has one right angle right triangle
a quadrilateral with two pairs of parallel sides parallelogram
a parallelogram with all sides congruent rhombus
a parallelogram with 4 right angles rectangle
a rectangle with 4 congruent sides square
a quadrilateral with exactly one pair of parallel sides trapezoid
a quadrilateral with two pairs of adjacent congruent sides kite
A line segment that connects two non-adjacent vertices of a polygon diagonal
A rule stating that if three sides of one triangle are congruent to three sides of another triangle, the triangles are congruent. side-side-side rule
one-half is a mirror-image of the other half line symmetry
The imaginary “mirror” in line symmetry line of symmetry
Not identical on either side of a central line; not symmetrical asymmetry
A figure has rotational symmetry if it can be rotated less than 360° around a central point and coincide with the original figure rotational symmetry
The point about which a figure is rotated center of rotation
A change in size or position of a figure transformation
A figure resulting from a transformation image
A movement (slide) of a figure along a straight line translation
A transformation in which the figure is turned around a point rotation
A transformation of a figure that flips the figure across a line reflection
A line that a figure is flipped across to create a mirror image of the original figure line if reflection
a polygon with 3 sides triangle
a polygon with 4 sides quadrilateral
a polygon with 5 sides pentagon
a polygon with 6 sides hexagon
a polygon with 7 sides heptagon
a polygon with 8 sides octagon
a polygon with 9 sides nonagon
a polygon with 10 sides decagon
Created by: mschuster
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