Show:
Polygons
Lines
Quadrilaterals
Triangles
Angles
100
A seven sided figure.
What is a heptagon?
100
Lines that meet or cross at a common point.
What are intersecting lines?
100
A rectangle with four congruent sides and all right angles.
What is a square?
100
A triangle with three congruent sides.
What is an equilateral triangle?
100
An angle that measures between 0 and 90 degrees.
What is an acute angle?
200
A polygon with eight sides.
What is an octagon?
200
A part of a line that connects two points.
What is a line segment?
200
A figure with exactly one pair of parallel sides.
What is a trapezoid?
200
A triangle with at least two sides of the same length.
What is an isosceles triangle?
200
An angle that measures between 90 and 180 degrees.
What is an obtuse angle?
300
A figure with three sides and three angles.
What is a triangle?
300
Lines that do not meet.
What are parallel lines?
300

A figure in which each pair of opposite sides are parallel and congruent.

What is a parallelogram?

300
A triangle that has one angle between 90 and 180 degrees?
What is an obtuse triangle?
300
An angle with a measure of 180 degrees.
What is a straight angle?
400
A polygon in which all sides are congruent and all angles are congruent.
What are regular polygons?
400

A line with one endpoint, that continues in one direction. 

What is a ray?

400
A figure with opposite sides parallel and equal.
What is a rhombus?
400
A triangle with no congruent sides.
What is a scalene triangle?
400
Two rays with a common endpoint.
What is an angle?
500
Two figures that are the same size and shape.
What are congruent figures?
500
Two lines that intersect and form right angles.
What are perpendicular lines?
500
A figure with opposite sides equal and all angles 90°.
What is rectangle?
500
A triangle with three angles that are less than 90 degrees.
What is an acute triangle?
500
A tool used to measure and draw angles.
What is a protractor?