Geometry Vocabulary Trivia
Game
Rules
Choose a topic and monetary amount of your choice. The higher the amount, the more
challenging the question! The first group to answer the question correctly earns the
amount. Be careful, you only have one guess per question!
Look for daily doubles, where you have the opportunity to earn double the original
amount of the question!
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Plane as Day
Circle Reasoning
A Solid Case
Prove It Squaring Off
Transformation
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A line that crosses two or more other
lines
What is a transversal?
Two angles formed by two lines and a
transversal that are on opposite sides of the
transversal and between the two given lines
What are alternate interior angles?
A line, ray, or segment that intersects a segment at its
midpoint and is perpendicular to it
What is the perpendicular
bisector?
To divide an angle or segment into two
congruent angles or segments
A closed figure in a plane made of line
segments that intersect only at their endpoints
What is a polygon?
An angle whose vertex is at the center of the circle
What is a central angle?
The distance around the circle
What is the circumference?
Any line segment whose end points lie on the circle
The distance along the circle
intercepted by two chords or radii
What is the arc length?
The point where the tangent line
intersects the circle
What is the point of tangency?
The amount of space taken up
by a solid or capacity
What is a volume?
On a polyhedron, the intersection of
three or more faces
What is a vertex?
The sum of the areas of the faces in
a polyhedron
What is the surface area?
A perpendicular segment that joins
the planes of the bases of a prism.
What is the altitude?
If, in two solids of equal altitude, the sections made by planes parallel to and at the same
distance from their respective bases are always equal, then the
volumes of the two solids are equal
What is Cavalieri’s Principle?
An example that shows a statement
false
What is a counterexample?
A rule used to determine whether
triangles are congruent by
comparing the three sides
What is SSS or Side-Side-Side
theorem?
A rule used to determine whether
triangles are congruent by comparing two angles and the side
between them
What is ASA or Angle-Side-Angle
Conjecture (Theorem)?
When all angles of one figure are congruent to the corresponding
angles in another figure
What are similar figures?
A transformation that preserves size and
shape. The image will be congruent to the
original figure
What is isometry ?
A polygon with four sides
What is a quadrilateral?
An equiangular quadrilateral
What is a rectangle?
An equilateral quadrilateral
What is a rhombus?
Having all the properties of a rectangle and a
rhombus
What is a square?
A quadrilateral with opposite sides parallel
and congruent.
What is a parallelogram?
The image of a figure that has been slid to
a new position without flipping or
turning
What is a translation?
A transformation that does not alter the size or shape of
the figure
What is a rigid transformation or
motion?
The direction of rotation when the
top of a figure turns to the left
What is counterclockwise
?
In a rotation, the point that does not
move
What is the center of rotation?
The line of reflection is this
from the figure and its image
What is equidistant?
It is the set of points that are a given distance from a
given point
What is a sphere?
To be a circle the definition had to include on a plane. The set of points thereby define a space and a 3-D figure.