elliot has a modern fish tank that is the shape of an oblique prism, shown below

You can instead call this triangle an acute or obtuse triangle.Īn acute triangle has three internal angles of less than 90 degrees. This is because it has an oblique angle and does not contain an angle that is 90 degrees. An oblique triangle is any triangle that is not a right triangle. The most straightforward example of an oblique plane figure to visualize is an oblique triangle. When two plane figures intersect, squares, for example, and create an oblique angle, the planes are called oblique planes.

You can figure out if two planes are oblique or not by looking at the angle they create when they intersect. When someone talks about oblique shapes, they refer to a shape, either plane or space, that has either an acute or obtuse (an oblique) angle. In simple terms, these sides will never meet. The sides that form the angles of an oblique shape are never perpendicular.

Obtuse angles: angles that are 90-180 degrees.Acute angles: angles that are 0-90 degrees.

Oblique shapes are shapes made of oblique angles. Oblique shapes are extraordinarily common, but many people don’t know what they are.

Elliot has a modern fish tank that is the shape of an oblique prism, shown below