Angles
Circles
Polygons
Triangles
Quadrilaterals
100
An angle whose measure is 90 degrees
What is a right angle?
100
A segment from the center of a circle to a point on the edge of the circle.
What is a radius?
100
A five-sided polygon.
What is a pentagon?
100
A triangle with one right angle.
What is a right triangle?
100
A quadrilateral with two pairs of opposite parallel lines.
What is a parallelogram?
200
An angle whose measure is less than 90 degrees.
What is an acute angle?
200
Two points on a circle and a continuous part of the circle between them
What is an arc of a circle?
200
A polygon whose sides are equal in measure.
What is an equilateral polygon?
200
A triangle with three acute angles.
What is an acute triangle?
200
An equilateral parallelogram.
What is a rhombus?
300
Two angles whose measures have the sum of 180 degrees.
What are complementary angles?
300
A line segment whose endpoints lie on the circle.
What is a chord?
300
A polygon in which no diagonal is outside the polygon.
What is a convex polygon?
300
A triangle with one obtuse angle.
What is an obtuse triangle?
300
A quadrilateral with two distinct pairs of consecutive congruent sides.
What is a kite?
400
Two angles with the same measure.
What are congruent angles?
400
Two or more coplanar circles with the same center.
What are concentric circles?
400
A ten-sided polygon.
What is a decagon?
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?
500
A ray that divides an angle into two congruent angles.
What is an angle bisector?
500
A line that intersects a circle only once.
What is a tangent?
500
Two sides of a polygon that share a common vertex.
What are consecutive sides?
500
Two angles of a triangle that are opposite two sides of equal length.
What are base angles?
500
An equiangular rhombus or an equilateral rectangle.
What is a square?
M
e
n
u