By:

Rachel Retterath (Rockelle)

Isosceles Triangle A triangle with two

equal sides andthe angles opposite the equal sides are also equal

Equilateral Triangle A triangle with all three sides of equal length.

All the angles will be 60°

Pyramid A solid object where:

The base is a polygon (a straight-sided shape)

The sides are triangles which meet at the top (the apex).

Rectangular Prism A solid (3-dimensional) object which has six faces that

are rectangles.It is a prism because it has the same cross-section along a length.

Cone A solid (3-dimensional) object that has a circular base

and one vertex

Acute Angle An angle less than 90°

Obtuse Angle An obtuse angle is more than 90° but less than 180°

Right Angle An angle which is equal to 90°, one quarter of a full

revolution.