Difference Between Interior and Exterior Design

INTERIOR

• Interior Design is the art or process of designing the interior,often including the exterior of a room or building. An interior design is someone who coordinates and manages such projects. Interior design is multifaceted profession that includes conceptual, development, communicating with the stakeholders of a project and the management and execution of the design.
• Interior Design not only offer all that an interior decorates or will offer,they go way beyond just prettying up a room.
• When it comes to design's job,while basic principles of design could be the same there will be different skill set and mindset required to apply them.
• Interior Designer will have much more control over the process and the end result.
• If every internal angle of a simple polygon is less than 180 degree, the polygon is called convex. The sum of the internal angle on the vertex is 180 degree.

EXTERIOR

• Exterior Design is the process of designing the exterior of the building. This includes the facade skin roof and foundation element. While exterior design can be just as creative and artistic as interior design a knowledge of structural engineering is necessary. Exterior design is usually performed by an architect with help of civil and structural engineer.
• In contract an exterior angle is an angle formed formed by one side of a simple polygon and a line extended form an adjacent side. The sum of the external angle on the vertex is 180 degree. 
• In Exterior Designer will have to respect the 'uncontrollable' part of the
  environment.
• Exterior wall material are bricks and blocks, cladding, exterior panels, exterior wall coating and materials, facades, precast concrete, rending, retaining walls etc. 
• Exterior material is cheaper than interior material.