Angles
Triangles
Points, lines and Planes
Circles
Miscellaneous
100
acute
What is an angle less than 90 degrees?
100
Vertex
Where the angles come together in a triangle
100
plane
What is a flat surface extending infinitely?
100
diameter
What is a chord that passes through the center point of a circle?
100
perpindicular
What are intersecting lines that form four congruent angles?
200
Obtuse
What is an angle greater than 90 degrees?
200
Right triangle
What is a triangle with a 90 degree vertex?
200
coplanar
What are points called that lie on the same plane?
200
chord
What is a segment joining two points on a circle?
200
quadrilateral
What is any four sided closed figure?
300
Vertical
What are congruent angles that are opposite to one another?
300
Isosceles triangle
What is a triangle with two equal sides?
300
collinear
What are points called that all lie on the same line?
300
Circumference
What is the distance around a circle?
300
parallelogram
What is a quadrilateral with both pairs of opposite sides parallel?
400
Adjacent
What are angles that are next to one another and share one side?
400
Scalene
What is a triangle with sides of three different lengths?
400
geometric construction
What is a special kind of drawing for which we use only a compass and a straight edge?
400
the formula for circumference
What is pi times the diameter?
400
trapezoid
What is a quadrilateral with exactly one side of parallel sides?
500
Supplementary
What are two angles that added together equal 180 degrees?
500
Equilateral triangle
What is a triangle with three equal sides?
500
Ray
What has one end point and extends in one direction infinitely?
500
the circumference of a circle
What is 2 times the radius, times PI?
500
perimeter
What is the distance around polygon?
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