Vocab
Triangles
Angles
Polygons
Area
100
A straight line that has two end points.
What is a line segment?
100
A polygon with 3 sides.
What is a triangle?
100
Two rays or line segments that share the same end point.
What is an angle?
100
A flat 2-dimensional figure made of two or more sides.
What is a polygon?
100
The area of a rectangle with length 4in and width 5in.
What is 20 square inches?
200
A straight line that goes in one direction forever starting from an end point.
What is a ray?
200
A triangle that has all equal sides.
What is a triangle?
200
An angle that is exactly 90 degrees.
What is a right angle?
200
A polygon where all side lengths and angle measurements are the same.
What is a square?
200
The area of a rectangle with length 7in and width 3in.
What is 21 square inches?
300
A point where two lines meet.
What is a vertex?
300
A triangle that has two equal sides.
What is an isosceles triangle?
300
An angle that is less than 90 degrees.
What is an acute angle?
300
Any polygon with 4 sides.
What is a quadrilateral/quadrangle?
300
The area of a rectangle with length 9ft and width 7ft.
What is 63 square feet?
400
Two lines that cross or meet.
What are intersecting lines?
400
A triangle with no equal sides.
What is a scalene triangle?
400
An angle that is more than 90 degrees but less than 180.
What is an obtuse angle?
400
A four-sided figure with opposite sides parallel. Opposite angles are equal, too.
What is a rhombus?
400
The area of a square with a 4cm long side.
What is 16 square centimeters?
500
Two lines that stay the same distance apart and never meet.
What are parallel lines?
500
A triangle with a 90 degree angle.
What is a right triangle?
500
An angle that is exactly 180 degrees so that it forms a straight line.
What is a straight angle?
500
A polygon with two sets of parallel lines.
What is a parallelogram?
500
The area of a square with a 12in long side.
What is 144 square inches?
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