Perimeter & Area
Length x Width is used to find the _____ of shape.
Area
Length x width x height finds the _____ of a 3-dimensional shape.
Volume
What is a Polygon?
A closed shape with straight sides.
What is the name of a polygon with 3 sides?
a Triangle
What is a Polygon?
A closed, two dimensional shape with straight lines.
What is a measurement that addresses 1 dimension and tells you the distance around a figure?
Perimeter
A rectangular prism has a length of 9 inches, a width of 5 inches, and a height of 12 inches. What is it's volume?
Volume = 540 cubic inches
All squares have parallel AND congruent sides.
Draw an Obtuse, Scalene Triangle.
Should have one angle larger than 90 degrees and all three sides are different lengths.
Can you draw something that is not a polygon?
If so, draw.
(should have drawn an open shape and/or something without straight lines)
Find the perimeter of a rectangle whose length is 7 inches and width is 9 inches.
Perimeter = 32 inches
A cube has a side length of 4 inches. What is it's volume?
Volume = 64 cubic inches
(A cube has all equal sides lengths. V = L x W x H).
Why is a rhombus not a rectangle?
A rhombus doesn't have 4 right angles.
What are the 3 ways you can classify a Triangle by the length of its sides?
Scary Scalene: no congruent sides
"Eye"- Isosceles: at least 2 congruent (equal) sides
Equilateral: 3 congruent sides
What are the three ways to classify a triangle based on its angles?
Right- exactly 90 degrees
Acute- less than 90 degrees
Obtuse- greater than 90 degrees
Find the area of an object that has the length of 5.9 meters and the width of 3.6 meters.
Area = 21.24 meters
Find the volume of an object with the height of 17 cm, the width of 10 cm, and the length of 5 cm.
850 cubic centimeters
Sketch a trapezoid.
(should have drawn a close-shape with 4 sides; must have one set of parallel sides)
Can you draw a triangle with 2 obtuse angles?
If so, draw.
Impossible!
Quadrilaterals are classified as either trapezoids or ___________?
Parallelograms
A square has an area of 36 square yards. What is the length and width of the shape?
(A square has four equal sides. 6 x 6 = 36)
Pattie built a rectangular prism with cubes. The base of her prism has 15 centimeter cubes. If her prism was built with 165 centimeter cubes in total, how many layers does her prism have?
165 / 15 = # of layers
11 layers
True or False:
A circle is a polygon?
FALSE
A circle doesn't have straight sides.
True or False:
All equilateral triangles are also isosceles triangles?
True
Because isosceles triangles must have at least two congruent sides.
What is the difference between a rectangle and a rhombus?
Rectangle- has 4 right angles and opposite side lengths are equal.
Rhombus- all 4 sides lengths are equal.