Polygons
How many sides does a shape need to be classified as a polygon?
At least 3.
What is a quadrilateral?
A closed, flat shape with 4 sides
What are parallel lines?
Lines that are always the same distance apart and never intersect.
Multiplying length x width helps you find what?
Area
The name of the polygon with 5 sides
What is a pentagon
The quadrilateral with four congruent sides
What is a square
What does it mean if a shape is symmetrical?
If you fold it in halves, both halves would match exactly.
What is the difference between area and perimeter?
Perimeter is measuring the distance around a shape while area is measuring the space inside a shape.
The name of the polygon with 8 sides
What is a octagon
List 3 or more attributes of a parallelogram
-at least one line of symmetry
-2 sets of parallel lines
-closed figure
-4 sides and 4 angles
-straight sides
-quadrilateral
-symmetrical
What does it mean if the side of a shape are congruent?
That the sides are the same length/size.
Length+Width+Length+Width helps you find...?
Perimeter
The name of the polygon with 10 sides
List 3 or more attributes of a trapezoid
-closed figure
-4 sides and 4 angles
-one set of parallel lines
-straight sides
-at least one acute and one obtuse angle
An angle that measures exactly 90 degrees
Find the perimeter of the lunch tray that measures 8 inches by 12 inches. Label with correct units.
Perimeter- 40 inches.
Is a circle a polygon? Why or why not?
No. It is not made up of straight line segments and does not have 3 or more sides.
Can a rhombus also be a square? Why or why not?
Yes. Both have 4 congruent sides and 2 sets of parallel lines. If the rhombus has 4 right angles, it can also be classified as a square.
Define obtuse angle AND acute angle
-Obtuse: an angle measuring MORE than 90 degrees
-Acute: an angle measuring LESS than 90 degrees
Find the area of a garden that measures 10 feet by 5 feet. Label with correct units.