The number of square units that covers a two-dimensional region, without any gaps or overlaps.
area
A square has a side length of 9 cm. What is its area?
81cm2
Calculate the surface area of the square pyramid.

Which are parallelograms?

B and C
What is the formula for finding the area of a parallelogram?
Area = base x height or bh
means “take apart.”
decompose
What is the area?
30 cm2
Which polyhedron would this net make?


#5
Which bases and heights are labeled correctly?

A, C, and D
What is the formula for finding the area of a triangle?
Area = base x height divided by 2 or bh
2
A type of quadrilateral that has two pairs of parallel sides.
parallelogram
What is the area?

6 units2
Daily Double! Which figure would have the greater surface area?

Daily Double! They have the same surface area.
Any parallelogram can be decomposed into what?
two identical triangles
If you multiplied the base and height of a parallelogram then divided it in half what type of polygon did you get?
a triangle
A closed, two-dimensional shape with straight sides that do not cross each other.
polygon
This parallelogram has an area of 21u2. How many units is the base?

3
What would the surface area be of the cube?

54u2
If the base of this triangle was e, what would the height be?

f
True or False? A trapezoid's area is found by doing base x height.
False! A = (b1 + b2)h
2
A point where two or more edges meet.
vertex or vertices
What is the area of the shaded triangle?

18u2
What is the surface area of the triangular prism?
90in2
Which are polygons?

A and C
True or False? Surface area = L*W*H
False!
V = L * W*H
V = Bh
V = Area of the base time the height