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Angles
Quadrilaterals
Polygons
Triangles
Geometry Language
100
Two rays or line segments that share the same endpoint.
What is an angle?
100
A quadrilateral that has 4 equal sides and 4 right angles?
Square
100
A flat 2-dimensional figue made of two or more sides.
What is a polygon?
100
A polygon with three sides.
What is a triangle?
100
A straight line that has two end points.
What is a line segment?
200
An angle that is exactly 90 degrees.
What is a right angle?
200
Quadrilateral with only one pair of parallel sides.
Trapezoid
200
A polygon where all side lengths and angle measures are the same.
What is a square?
200
A triangle that has all equal sides.
What is an equilateral triangle?
200
A straight line that goes in one direction forever starting from an end point.
What is a ray?
300
An angle that is less than 90 degrees.
What is an acute angle?
300
Has four sides but none are parallel.
Regular Quadrilateral
300
Any polygon with four sides.
What is a quadrilateral/quadangle?
300
A triangle that has two equal sides.
What is an isosceles triangle?
300
A point where two lines meet.
What is a vertex?
400
An angle that is more than 90 degrees but less than 180.
What is an obtuse angle?
400
Has two pair of pair of parallel sides.
Parallelogram
400
A four-sided figure with opposite sides parallel. Opposite angles are equal, too.
What is a rhombus?
400
A triangle with no equal sides.
What is a scalene triangle?
400
Two lines that cross or meet.
What are intersecting lines?
500
An angle that is exactly 180 degrees so that it forms a straight line.
What is a straight angle?
500
Three types of special parallelograms.
Square, Rhombus, and Rectangle
500
A polygon with two sets of parallel lines.
What is a parallelogram?
500
A triangle with a 90 degree angle.
What is a right triangle?
500
Two lines that stay the same distance apart and never meet
What are parallel lines?