Polygons
True or False
A polygon is an open figure
What is false?
Lines that cross at one point
intersecting
This quadrilateral only has one pair of parallel sides
Trapezoid
An angle that is less than 90 degrees
Acute
The measurement of the outside of a shape
perimeter
How many sides can a polygon have?
What is 3 or more?
A line on which a figure can be folded so that both halves match exactly
line of symmetry
This quadrilateral has 4 congruent sides and 4 right angles and two pairs of parallel sides
Square
An angle that is exactly 90 degrees
Right
L X W =
Area
True or False
A polygon has curved sides
What is false?
Two lines that will never cross or intersect
Parallel Lines
This quadrilateral has opposite sides the same length and 4 right angles
Rectangle
An angle that is greater than 90 degrees
Obtuse
What is the perimeter of a 6 by 4 array?
20 units
Name a polygon with three sides
triangle
Two intersecting lines that form a right angle
Perpendicular Lines
This quadrilateral has opposite sides are parallel and all sides are the same length
Rhombus
The number of angles a octagon has
Eight
What is the area of a bedroom that is 5 feet wide by 10 feet long?
50 square feet
True or false
A polygon is a flat shape
True
The point where two lines meet to make the corner of a shape
Vertex
A quadrilateral in which opposite sides are parallel
Parallelogram
The number of angles a decagon has
10
What is the perimeter of the garden that is 9 feet wide by 5 feet long?
28 feet