Area Vocabulary
Name of Polyhedrons
Area of polygons
Surface Area and Nets
Surface Area and nets
100
What is name of the bottom of a 2-d or 3-d shape? The bottom is the _____ of the figure.
Base
100
The bottom surface of a 3-d figure is it's _____. 3-d figures are named from their _____.
Base
100
What is the formula for area of a triangle?
bxh/2
100
Find the surface area
468 m2
100
What am I?
Clue 1: I have 6 rectangular faces.
Clue 2: I have 8 vertices (corners).
Rectangular prism
200
The flat surface of a 3-d figure.
Face
200
A 3-d figure with a square base that comes to a point at its top.
Square Pyramid
200
What am I?
Clue 1: This net consists of 4 triangles and 1 square. Clue 2: The square serves as the base, and the triangles meet at a single point.
Square Pyramid
200
What am I?
Clue 1: I have 5 faces. I have 1 square base and 4 triangular faces.
Clue 2: All of my triangular faces meet at one point.
Square Pyramid
300
What makes a 900 angle with the base of a 2-d figure? The _____ is the distance from the top of a figure to it's base.
Height
300
A 3-d figure made up of 6 rectangular faces. It has a surface at its top.
Rectangular Prism
300
How do you find the height of a triangle that does not have a 90 degree angle?
Draw a perpendicular line from the base to its highest point. (make a right angle with the base)
300
Find the surface area
216 ft2
300
Use the net to find the surface area.
6 x 6 = 36 (square base)
6 x 5 divided by 2 = 15
36 + 15 + 15 + 15 +15 = 96 square units
400
The line where two surfaces or faces meet on a 3-d figure.
Edge
400
A figure with a triangular base and three rectangular faces. It comes to an edge at it's top.
Triangular Prism
400
Use the grid to find the area of the irregular polygon.
60 square units.
400
Use the net to find the surface area of the solid below.
Square base (36) + Each triangle (27) (include all four)
36 + 27 + 27 + 27 + 27 = 144 ft2
36 + (4 x 27) = 144 ft2
400
Dudley the dragon wants to wrap his small gift with wrapping paper.
How much wrapping paper is needed to cover the gift box?
Front and back Rectangle faces (36) + Right and Left Rectangle face (12) + Top and Base Rectangle face (27)
(36 x 2) + (12 x 2) + (27 x 2) = 150 cm2
500
The place where two lines meet on a 2-d figure. The place where two or more edges meet on a 3-d figure.
Vertex
500
A 3-d figure made up of four triangular faces that comes to a point at its top.
Triangular Pyramid
500
Using the grid, find the area of the irregular polygon.
Split into 1 square, 1 rectangle, 1 right triangle
32 square units
500
Maddie bought a gift for her friend. She wants to place the gift in a package with the length of 9 inches, width of 12 inches, and height of 4 inches. Then she wants to wrap the gift. What is the surface area of the package?
All the sides =
12 x 4
12 x 9
9 x 4
Then multiply each by two because they each have a matching side.
384 m2
500
How much paint is needed to paint the statue below?
Front Triangle face (6) + Back Triangle face (6) + Left Rectangle face (18) + Right Rectangle face (30) + Bottom Rectangle face (24)
6 + 6 + 18 + 30 + 24 = 84 in2