A __________ is a polygon with 4 sides.
quadrilateral
What is a quadrilateral? Draw one example.
A four-sided polygon. Examples: squares, rectangles, rhombi, trapezoids, parallelograms
An angle that is 90 degrees is known as a _________ angle.
Right Angle
What is the formula for finding the area of rectangles?
length X width
Name the geometrical figures found below:
Rectangular prisms
What kind of angle is shown below?
acute
Name the quadrilateral shown below.

parallelogram
An angle that is 75 degrees would be known as a _______ angle because _________ angles are _______than 90 degrees.
An angle that is 75 degrees would be known as a acute angle because acute angles are less than 90 degrees.
A rectangle has a length of 5mm and a width of 4mm. What is the area?
20mm
Name the shapes below:

spheres
What kind of angle is shown below?

obtuse
Draw a trapezoid on your dry-erase boards.
Trapezoids must have 4 sides and four angles. Any of these would work:

An angle that is 110 degrees would be classified as an _________ angle because ________ angles are _______ than 90 degrees.
An angle that is 110 degrees would be classified as an obtuse angle because obtuse angles are greater than 90 degrees.
A rectangle has a length of 1/2 feet and a width of 1/3 feet. What is the area?
1/2 times 1/3 equals: 1/6 feet
How many quadrilaterals are found in the image below? What are their names?
2: both are parallelograms; one of the parallelograms is a rectangle
What name can you give a quadrilateral that has four equal sides?
rhombus
Classify the shape below by it's angles and sides.

This is a:
-Polygon
-Quadrilateral
-Trapezoid
-Two acute angles
-Two obtuse angles
-Four sides
180 degrees
Find the area of the composite figure below.
34ft.
In the image below, how would you classify the garbage can?

The garbage can is a cylinder.
True or False:
A square is a rectangle, but a rectangle may not be a square.
True. A rectangle is a 4-sided polygon with 4 right angles. A square is a special kind of rectangle called a rhombus. Rectangles do not necessarily have to have 4 equal sides, though.
True or false:
All quadrilaterals must have right angles.
False. Many quadrilaterals do NOT have right angles.
Draw an equilateral triangle. Make sure to show the angle measurements and use tick marks to show how the sides are equilateral.

Volume is length X width X height. Find the volume of the rectangular prism below.

384 cm.
Volume = length X width X height. Find the volume of the composite below.
162 cm