Finding the missing angles in a circle using different properties of circles We will use all the basic circle terminology and the circle properties we discussed in the previous posts to solve the problems.

This property of circles was discovered by the Great Greek Mathematician named Thales about 2500 year ago. This is called the inscribed angle subtended by the semicircle is always a right angle. I have

How inscribed angles subtended by the same arc related in a circle? All the inscribed angles subtended by the same arc in a circle measure same. In other words the measure of all the inscribed angles subtended

How Central Angle of a Circle Related to Inscribed Angle Subtended by the Same Arc The central angle measures twice the inscribed angle inscribed by the same arc on the same side of the circle boundary.

Three Properties of the Chord of a Circle

How tangent to a circle related to its radius? Tangent to a circle is always perpendicular to its radius at the point of tangency. This relationship is known as the tangent-radius property of a circle. 

Circle Geometry – Lesson Plan 1 - Grade 9 Math Standard (Most curricula around the world) What is a circle?  Circle is a round path, the condition for each and every point of this path is to be at