Angles and Lines
Polygons
Triangles
Quadrilaterals
Circles
100
Two or more lines that lie in the same plane and do not intersect
What are parallel lines
100
A seven-sided polygon
What is a heptagon
100
A triangle with one right angle
What is a right triangle
100
A quadrilateral with two pairs of opposite parallel sides
What is a parallelogram
100
A segment from the center of a circle to a point on the edge of the circle
What is a radius
200
Two lines that intersect to form a right angle
What are perpendicular lines
200
A polygon whose sides are equal in measure
What is an equilateral polygon
200
A triangle with three angles less than 90 degrees
What is an acute triangle
200
An equilateral parallelogram
What is a rhombus
200
Two points on a circle and the continuous part of the circle between them
What is an arc of the circle
300
Two angles whose measures have the sum of 90 degrees
What are complementary angles
300
A polygon in which no diagonal is outside the polygon
What is a convex polygon
300
A triangle with one angle greater than 90 degrees
What is an obtuse triangle
300
A quadrilateral with two distinct pairs of consecutive congruent sides
What is a kite
300
A line segment whose endpoints lie on the circle
What is a chord
400
Two angles whose measures have the sum of 180 degrees
What are supplementary angles
400
A twelve sided polygon
What is a dodecagon
400
A triangle with at least two congruent sides
What is an isosceles triangle
400
A quadrilateral with exactly one pair of parallel sides
What is a trapezoid
400
Two or more coplanar circles with the same center
What are concentric circles
500
A ray that divides an angle into two congruent angles
What is an angle bisector
500
Two sides of a polygon that share a common vertex
What are consecutive sides
500
A triangle with three non-congruent sides
What is a scalene triangle
500
An equiangular rhombus or an equilateral rectangle
What is a square
500
A line that intersects a circle only once
What is a tangent
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