Vocabulary
A closed figure that has straight lines, which don't intersect
What is a polygon?
A 2D shape with 3 sides and 3 vertices
What is a triangle?
8 vertices
6 square faces
12 edges
What is a cube?
8 vertices
6 faces
12 edges
The base is a rectangle.
What is a rectangular prism?
If I cut a square diagonally, what do I get?
2 triangles
Is a heart shape a polygon? Why or why not?
No, it has curved lines, not straight lines.
A 2D shape with 5 sides and 5 vertices
What is a pentagon?
0 vertices
2 faces
0 edges
The base is a circle.
What is a cylinder?
6 vertices
5 faces
9 edges
The base is a triangle.
What is a triangular prism?
If you cut a rectangle down the middle, what do I get?
2 squares
A square, rhombus, rectangle, and trapezoid are all _________.
Quadrilaterals
A 2D shape with 6 sides and 6 vertices
What is a hexagon?
1 vertex
1 face
0 edges
The base is a circle.
What is a cone?
5 vertices
5 faces
8 edges
The base is a square.
What is a square pyramid?
If I cut a square across (from left to right), what do I get?
2 rectangles
A trapezoid is a quadrilateral, but is not a ________.
Parallelogram
A 2D shape with no sides or vertices
What is a circle?
0 vertices
0 faces
0 edges
What is a sphere?
4 vertices
4 faces
6 edges
The base is a triangle.
What is a triangular pyramid?
If I cut a triangle across (from left to right), what do I get?
1 triangle and 1 trapezoid
The units covered by a 2D shape
OR
The size or a surface
What is area?
If I cut a hexagon across (left to right), what do I get?
2 trapezoids