Relier Pairs Geometry part 1 of circle unit vocabVersion en ligne study geometery circle vocab par Hannah Schmidt 1 Diameter 2 Central angles 3 Secant 4 Inscribed angle 5 Chord 6 Radius 7 Tangent 8 Point of tangency segment connecting 2 points on the circumference and through the center the location where the tangent line touches the circumference segment connecting any 2 points on the circumference angle whose vertex IS the center of the circle -the measure of a circle is EQUAL to the measures of the intercepted arc angle whose vertex is on the circumference of the circle - The measure of an inscribed angle is HALF of the intercepted arc line intersecting a circle twice a line perpendicular to a radius and only touches the circumference once Segment connecting center to circumference