Spark Plug
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Write 3 examples of a triangle you see in
the room.
Write 3 examples of a circle you see in the
classroom.
Write 3 examples of a rectangle you see in
the classroom.
Names of 2D Figures
3 Triangle
4 Rectangle
5 Pentagon
6 Hexagon
7 Heptagon
8 Octagon
9 Nonagon
10 decagon
11 hendecagon
12 dodecagon
3-D Shapes
Pyramids
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Only has one base
Named by it’s base ( put “al” on end if it ends with “gon and “ar “ if
it ends with “angle”)
Comes to a point
Triangles for sides
Prisms
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Named by the two identical bases ( put “al” on end if it ends with
“gon and “ar “ if it ends with “angle”)
Rectangles for sides
Has a flat top and bottom
CRCT Formula Sheet:
Area Formula review:
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Rectangle: A= l x w
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Triangle: A= ½ bh
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You can find the surface area of any 2 or 3
dimensional figure by “decomposing” it
Decompose to find the area:
Let’s try:
Try this one:
Last one:
Spark Plug:
Find the surface area.
VOLUME:
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Prisms: V= Bh (big B means to find the
area of the base)
V= l x w x h for rectangular prisms ONLY
Pyramids: V= 1/3Bh (big B means to find
the area of the base)
Let’s try these:
Try some of these:
Just a few more:
Now try this one: