In the same circle, or in congruent circles, two chords are congruent if and only if they are ………….from the center.

The angle whose vertex is the center of the circle is called………..

The line segment which has its endpoints on the circle is called ………..

The circle passing through the vertices of the triangle is called …………

If the inscribed polygon is a right angle, then the side opposite to the right angle is ………

If one side of an inscribed triangle is the diameter of the circle, then the triangle is a ………

A quadrilateral can be inscribed in a circle if and only if its opposite angles are….

The circle which contains all vertices of a polygon is called…………

The polygon that has all its vertices on the circle is called…..

If two inscribed angles of a circle intercept the same arc, then the angles are………

The measure of an inscribed angle is………. the measure of its intercepted arc.

The arc that lies in the interior of an inscribed angle and has endpoints on the angle is called ….

The angle whose vertex is on a circle and whose sides contains chords of the circle is called…

Answer the following questions using the given figure.

What is the measure of the arc 

See the position of the letters in the figure and try to solve the problem.

What is the name of the given figure?

Do not confuse between the figures.

A department conducted a survey and the results are as follows:

What is the total measure of painter’s and programmer’s block?

See  and understand the problem, then solve it.