Lesson 3: Use Nets to Find Surface Area

a flat, "unfolded" representation of a three-dimensional shape.

• net

• vertex

• surface area

• edge

• face

a three-dimensional figure with two parallel bases that are the same size and shape.​ ​ (a)  

• prism
• cube
• pyramid
• vertex
• edge
• face

​ ​ (a)   a rectangular prism in which each face fo the prism is a square.

• prism
• cube
• pyramid
• vertex
• edge
• face

​ a three-dimensional figure whose base is a polygon and whose other faces are triangles. ​ (a)  

• prism
• cube
• pyramid
• vertex
• edge
• face

Match the following

• exactly the same

• identical

• positioned up and down.

• vertical

• positioned side to side.

• horizontal

a prism where each base is perpendicular to the other faces.

a right prism where the bases and other faces are rectangles.​ (a)  

• prism
• pyramid
• right prism
• right rectangular prism
• cube

the sum of the areas of all the faces of a three-dimensional figure.

Match the following area formulas to the shape.

• a=b x h

• square

• a = s x s

• rectangle

• a = l x w

• parallelogram

match the following term to its definition

• length in one direction

• compose

• to break into parts

• Perpendicular

• to make by combining parts

• dimension

• meeting to form right angles

• decompose