How many sides are in a quadrilateral? Can you name some types of quadrilaterals?
4
A tangent to a circle is .............. to the radius at its point of tangency
perpendicular
The straight line passing through the center of the circle and the midpoint of any chord of it is .........to this chord
perpendicular
The mesure of inscribed angle in a semi circle =.............
90
the inscribe angles subtended in the same arc are...........
equal in measure
The measure of two supplementary angles is
180