Lines and Angles
I am a straight line with two end points.
Line segment
What is a shape with lines that do NOT start and end at the same point?
Open Shape
I am a polygon with 3 sides.
Triangle
Can a circle ever be a polygon? Why or why not?
No, because a circle does not have straight lines.
What is a point where two lines meet?
Vertex
What is a 90 degree angle?
Right angle
What is a shape with only straight lines and no curves?
Polygon
I am a polygon where all side lengths and angle measures are equal.
Square
Can a triangle ever be a quadrilateral? Why or why not?
No, because triangles only have 3 sides. Quadrilaterals have 4 sides.
Two lines that cross or meet
Intersecting lines
What is an angle that is less than 90 degrees called?
Acute
What is a shape with lines ONLY straight lines that start and end at the same point?
Closed shape
What is the name of a polygon with 5 sides?
Pentagon
What are TWO other special names for a square?
Rectangle, rhombus, parallelogram
How many times do parallel lines cross?
Zero
Two rays or line segments that share the same endpoint.
Angle
I am any polygon with 4 sides.
Quadrilateral
What is the name of a polygon with 8 sides?
Octagon
How many sets of lines does a trapezoid have?
1
What is the difference between a PLANE shape and a solid shape?
Plane shapes are flat/2-D and solid shapes are 3-D.
What is an angle that is more than 90 degrees called?
Obtuse
I am a polygon with two sets of parallel lines.
Parallelogram
I am a four-sided figure with opposite parallel sides. My opposite angles are equal, too.
Rhombus
Million sides: Megagon
Nine sides: Nonagon
What is a shape with 10 sides called?
Decagon