A straight line that is tangent to a circle could be
extended infinitely in either direction and would still touch
the circle at only one point. A right angle is formed by the tangent line and the point's corresponding radius.
The circumference is the distance around a circle.
An arc is a portion of the circumference. An arc's length
can be measured in units, or in degrees. An arc encompassing the
shorter section of the circumference between points is called
a minor arc and the one encompassing the longer section is
called a major arc.
A chord is a straight line from one point on the circumference
to another point on the circumference. It may or may not pass
through the center (in other words, diameters are chords, but
chords are not necessarily diameters).
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Test Prep Lessons With Video Lessons and Explained MCQ
Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.