Geometry Vocabulary Test Questions – Flashcards
Unlock all answers in this set
Unlock answersquestion
acute angle
answer
an angle with a measure of less than 90 degrees
question
acute triangle
answer
a triangle with all acute angles
question
alternate exterior angles
answer
angles outside parallel lines, on opposite sides of the transversal, and on different parallel lines
question
alternate interior angles
answer
angles inside parallel lines, on opposite sides of the transversal and on different parallel lines
question
altitude of a triangle
answer
a line segment with one endpoint on a vertex of a triangle that is parallel to the opposite side
question
arc measure
answer
the measure of the central angle that cuts off an arc
question
base angles (of an isosceles triangle)
answer
the angles at either ends of the base of an isosceles triangle
question
base (of an isosceles triangle)
answer
the non-congruent side of an isosceles triangle
question
bisector (of a segment)
answer
"a line, segment, or ray, that divides a segment into two congruent segments"
question
bisector (of an angle)
answer
"a line, segment or ray, that divides a segment into two congruent angles"
question
central angle
answer
an angle with a vertex at the center of a circle
question
chord
answer
a line segment with endpoints on a circle
question
circle
answer
all the points equidistant from a given point
question
collinear
answer
(three or more points) on the same line
question
complementary angles
answer
angles whose measures have a sum of 90 degrees
question
concave polygon
answer
an angle with at least one exterior diagonal
question
congruent angles
answer
angles with the same measures
question
congruent segment
answer
segments with the same measures
question
consecutive sides
answer
sides in a polygon that share a vertex
question
consecutive vertices
answer
vertices in a polygon that are adjacent to the same side
question
construct
answer
to accurately make a figure using a compass and straightedge
question
convex polygon
answer
a polygon with no external diagonals
question
coplanar
answer
on the same plane
question
corresponding angles
answer
angles on different parallel lines in the same position relative to the parallel line and the transversal
question
deductive reasoning
answer
using previously agreed upon facts to reach conclusions
question
degree of rotational symmetry
answer
the number of degrees a figure must be turned to create a congruent figure
question
degrees
answer
a unit of measure of angles
question
diagonal of a polygon
answer
a line segment from one vertex of a polygon to another consecutive vertex
question
diameter
answer
a chord that passes through the center of the circle
question
draw
answer
to make an accurate figure using a protractor and a ruler
question
endpoints (of a segment)
answer
the points where a segment begins and ends
question
endpoints (of an arc)
answer
the points on a circle where an arc begins and ends
question
equiangular polygon
answer
a polygon with all congruent angles
question
equilateral polygon
answer
a polygon with all congruent sides
question
equilateral triangle
answer
a triangle with all congruent sides
question
exterior angle
answer
an angle formed by the side of a polygon and the extension of an adjacent side
question
function rule
answer
an algebraic expression that describes a sequence
question
included angle (of a triangle)
answer
an angle that is adjacent to the two sides in question
question
included side (of a triangle)
answer
a side that is adjacent to the two angles in question
question
inductive reasoning
answer
recognizing patterns to make predictions
question
isosceles triangle
answer
a triangle with at least two congruent sides
question
kite
answer
a quadrilateral with two sets of consecutive congruent sides
question
legs (of an isosceles triangle)
answer
the two congruent sides of an isosceles triangle
question
line
answer
a one dimensional figure that goes on forever in two directions
question
line segment
answer
a piece of a line with two endpoints
question
linear pair (of angles)
answer
two angles that share a vertex and one side and whose non-shared sides form a line
question
major arc
answer
an arc that is greater than a semi-circle
question
median (of a triangle)
answer
a line segment with one endpoint on a vertex of a triangle and one endpoint on the midpoint of the opposite side
question
midsegment (of a triangle)
answer
a line segment with endpoints on the midpoints of two sides of a triangle
question
minor arc
answer
an arc that is smaller than a semi-circle
question
obtuse angle
answer
an angle that is greater than 90 degrees and less than 180 degrees
question
obtuse triangle
answer
a triangle with one obtuse angle
question
opposite angle( of a triangle)
answer
an angle in a triangle that is not adjacent to the side in question
question
opposite side (of a triangle)
answer
a side in a triangle that is not adjacent to the angles in question
question
parallel
answer
(lines) in the same plane that never intersect
question
parallelogram
answer
a quadrilateral with two sets of parallel sides
question
perpendicular
answer
meeting to form a right angle
question
perpendicular bisector
answer
a line, segment, or ray that is perpendicular to a segment and passes through the midpoint
question
point
answer
a location in space
question
point of tangency
answer
the point where a tangent line touches a circle
question
polygon
answer
a closed figure formed of line segments that meet at their endpoints
question
radius
answer
a line segment with one endpoint on a circle and one endpoint at the center of a circle
question
ray
answer
part of a line with one endpoint
question
rectangle
answer
a quadrialateral with all congruent angles
question
reflectional symmetry
answer
having a line about which the figure can be reflected to form a congruent figure
question
regular polygon
answer
an equilateral equiangular polygon
question
remote interior angle
answer
in a triangle, the two angles that are not adjacent to the exterior angle in question
question
rhombus
answer
a quadrilateral with all congruent sides
question
right angle
answer
an angle that measures 90 degrees
question
right triangle
answer
a triangle with one right angle
question
rotational symmetry
answer
being able to be turned less than 360 degrees about the center to form a congruent figure
question
scalene triangle
answer
a triangle with no congruent sides
question
semicircle
answer
an arc with endpoints that coincide with a diameter
question
sides (of an angle)
answer
the rays that form an angle
question
sketch
answer
to make a marked diagram without tools
question
square
answer
a quadrilateral that is equilateral and equiangular
question
supplementary angles
answer
two angles whose measures sum to 180 degrees
question
tangent
answer
a line that touches a circle at one point
question
trapezoid
answer
a quadrilateral with exactly one pair of parallel sides
question
vertex angle (of an isosceles triangle)
answer
the angle in an isosclese triangle that is opposite the side that is not congruent
question
vertex (of a polygon)
answer
a point where two sides of a polygon meet
question
vertical angles
answer
two angles that share a vertex and no sides and are formed by intersecting lines
