Angles
The point where the 2 sides of an angle meet?
What is the vertex?
A polygon with 3 sides and 3 inside angles.
What is a triangle?
#1 The reason this shape is not a polygon.
What are the crossing line segments?
#1 Name this quadrilateral.
What is a rectangle?
This quadrilateral always has 2 pairs of opposite parallel sides.
What is a parallelogram?
This type of angle is smaller than a right angle.
What is an acute angle?
A polygon with 4 sides and 4 inside angles.
What is a quadrilateral?
#2 The reason this shape is not a polygon.
What is the curved line?
#2 Name this quadrilateral.
What is a square?
This type of parallelogram always has 4 right angles.
What is a rectangle?
This type of angle is larger than 90 degrees.
What is an obtuse angle?
A polygon with 5 sides.
#3 The reason this shape is not a polygon.
What is the open space where the line segments don't meet?
#3 Name this quadrilateral.
What is a rhombus?
This quadrilateral always has 4 right angles and 4 sides that are equal in length.
What is a square?
An angle that is 45 degrees.
What is acute?
A polygon with 8 sides.
What is an octogon?
#4 The reason this shape is not a polygon.
What is the 3rd dimension? (This shape is not flat--it is 3-D)
#4 Name this quadrilateral.
What is a trapezoid?
This quadrilateral has exactly 1 pair of opposite parallel sides.
What is a trapezoid?
An angle that is 100 degrees.
What is obtuse?
A polygon with 10 sides.
What is a decagon?
#5 The TWO reasons this shape is not a polygon.
#5 Name this quadrilateral.
What is a parallelogram?
This parallelogram is like a square (and can even BE a square) because it has 4 equal sides, but it does not always have 4 right angles.
What is a rhombus?