Polygons
A polygon with 3 sides
Triangle
A quadrilateral with 4 congruent sides and 4 right angles
square
What do you call an angle that is the same as the corner of a paper or index card?
right angle
4
A polygon with 4 sides
Quadrilateral
A quadrilateral with 4 right angles and opposite sides congruent
rectangle
What do you call an angle that is bigger than a right angle?
obtuse angle
6
A polygon with 5 sides
Pentagon
A quadrilateral with 4 congruent sides and no right angles
rhombus
What do you call an angle that is smaller than a right angle?
acute angle
What shape is each face of a cube?
square
A polygon with 6 sides
Hexagon
A quadrilateral with 2 pairs of parallel sides and no right angles
parallelogram or rhombus
How many sides do triangles have?
3 sides
How many right angles do you need in a right triangle?
1
What does congruent mean?
the same length/size
What are 2 rules a polygon has to follow?
1. closed
2. 3 or more sides
3. endpoint to endpoint
A quadrilateral with 1 pair of parallel sides
trapezoid
What are the 3 types of triangles?
right, acute, obtuse
How many acute angles do you need in an acute triangle?
3
What does parallel mean?
The sides will never touch