Focus on

Can you spell each

word correctly?

Do you know the

definition of each word?

Essential Question

How do we identify geometric shapes?

There are many different

geometric shapes.

polygonpolygon – a closed figure made up of three or more line segments.

Examples: The following are examples of polygons:

                                                                  

The figure below is not a polygon, since it is not a closed figure:

                                

irregular polygon

irregular polygon- a polygon that has sides of various lengths and angles.

parallelogramparallelogram- a shape that has four sides where the opposite sides are equal in length and parallel.

parallelogramparallelogram - a four-sided polygon with two pairs of parallel sides. The sum of the angles of a parallelogram is 360 degrees. Examples:

rhombus rhombus- a shape that has opposite sides parallel and four sides all of the same length.

rhombusrhombus -a four-sided polygon having all four sides of equal length. The sum of the angles of a rhombus is 360 degrees.

                                                                               

trapezoidtrapezoid – a four sided shape with only 2 parallel lines.

trapezoidtrapezoid - a four-sided polygon having exactly one pair of parallel sides. The two sides that are parallel are called the bases of the trapezoid. Examples:                                                                   

rectangular prism

rectangular prism – a three dimensional figure with 6 faces - opposite faces are the same size.

quadrilateralquadrilateral- a polygon with four sides and four angles.

90° 90˚

90° 90°

90 x 4 =360 °

quadrilateral quadrilateral - a four-sided polygon. The sum of the angles of a quadrilateral is 360 degrees. Examples:

                                                          

Here is a website to further assist in

understanding the vocabulary words

http://www.mathleague.com/help/

geometry/polygons.htm

Essential Question

How many ways can we measure things?

Ways to Measure Length

• Inch •Feet•Yard•Meter•Centimeter

lengthlength -the longest measure of anything. A ruler helps you measure length.

inchinch- a measure of length equal to 1/12 of a foot. A way to measure length. A quarter is about 1 inch.

12 inches = 1 foot

footfoot- 12 inches equals 1 foot. Use a ruler to measure length.

12 inches = 1 foot

yard yard- a unit of measure of 3 feet or 36 inches. Use a yard stick to measure length.

36 inches = 3 feet = 1 yard

centimetercentimeter – Metric Measurement - A unit which is less than an inch or 1/100 of a meter. A way to measure length.

metermeter – the basic unit of length in the MetricSystem which equals about 39 ½ inches. Meter –a way to measure length.