Find the area of the triangle given below: (Unit = square cm)

Identify the shape that will be angled cross-section of a rectangular pyramid.

The plane cuts the pyramid at an angle which is not parallel to the base of the cone, this is the reason why we are getting a rectangle but with a length : breadth ratio different than that of the base.

Name the shape that would result from slicing a rectangular pyramid parallel to the base

Since the pyramid is rectangular, this means that the base of the pyramid is a rectangle. Therefore, if we slice it parallel to the base, we’ll get a cross section which will look like the base of the pyramid, i.e., a rectangle.

Describe the cross section.

From the given figure, we can observe that the plane cuts the prism making an angle of 0 degrees with the base of the prism. Thus, we’ll get a cross section which will be similar to the base of the prism, i.e., a triangle.

Describe the cross section.

The plane cuts the cone at an angle which is not parallel to the base of the cone, this is the reason why we are getting an oval. If the plane did cut the cone making 0 degrees with the base of the cone, then we would have got a circle.

Find the number of faces the following prism has.

From the given figure, we can see that there are a total of 7 faces of the prism. 5 of them re at the sides ( 3 of which are visible from the front and 2 of which are visible from the back) and 2 of them are at the top and bottom respectively.

The shape that would result from slicing a rectangular pyramid perpendicular to the base is _____________

The best name for this polyhedron is _____________.

Know which shape denotes what.

Prisms always have TWO ______________.

Know a prism in detail.

Determine the number of edges the following polyhedron has.

Edge is a line segment joining 2 vertices of a figure.

Use Euler's Theorem, F + V = E + 2.
Solve for the missing part.
Faces= 8
Vertices= 12
Edges= ?

Know how to solve the linear equation.

Identify the number of edges the following prism has.

An edge is a line segment joining 2 vertices of a shape.

The plural of vertex is

Know the plural of geometrical terms.

Find the number of vertices the following prism has.

Vertices are points where 2 or more edges meet.

Use Euler's Theorem, F + V = E + 2.
Solve for the missing part.
Faces= ?
Vertices= 6
Edges= 9

Know how to solve a liner equation.

Find the number of faces the following prism has.

Know what a face is.