Introduction to Chord and Arcs of a Circle

Circle theorems are statements in geometry that state important results related to circles that are used to solve various questions in geometry. They have very useful applications within design and engineering.

These theorems show relationships between angles within the geometry of a circle. We can use these theorems along with prior knowledge of other angle properties to calculate missing angles, without the use of a protractor. Can you find the value of angle in the figure below.