If you need to know the value of an unknown angle in a triangle or a quadrilateral, this is a problem that is common in middle school mathematics. To get the correct answer, simply add the sum of the degrees of the other angles and subtract that amount from 180. The result of that will be the correct answer. This and other simple problems are the key to have a student succeed in the subject of geometry and if you have a child in the middle school age you should drill them on problems such as this to prepare them for more complicated equations that they will see in their high school years.

Geometry is the study of the shape and size of relative positions of figures and properties of space. It is one of the very oldest of the mathematical sciences. It has many practical uses in other fields such as astronomy. Since the mapping of the stars and planets and relationships between movements of celestial bodies is done by relating them to known objects on the celestial sphere, geometry has long been used in this field.

When Descartes introduced coordinates and algebra was developed, this marked a new stage of development for the science of geometry. Now complex geometric figures such as plane curves could be represented in an analytical fashion with functions as well as with equations. This was the event that directly led to the development of calculus in the 17th century.

Geometry also has use in many other scientific fields and in new theories such as string theory. It continues to this day as one of the most important foundations in the field of mathematics and it should be mastered before a student tries to tackle more difficult subjects such as calculus and differential equations.

Geometry is the study of the shape and size of relative positions of figures and properties of space. It is one of the very oldest of the mathematical sciences. It has many practical uses in other fields such as astronomy. Since the mapping of the stars and planets and relationships between movements of celestial bodies is done by relating them to known objects on the celestial sphere, geometry has long been used in this field.

When Descartes introduced coordinates and algebra was developed, this marked a new stage of development for the science of geometry. Now complex geometric figures such as plane curves could be represented in an analytical fashion with functions as well as with equations. This was the event that directly led to the development of calculus in the 17th century.

Geometry also has use in many other scientific fields and in new theories such as string theory. It continues to this day as one of the most important foundations in the field of mathematics and it should be mastered before a student tries to tackle more difficult subjects such as calculus and differential equations.