The document defines key terms related to circles:
- A circle has a center, radius, diameter, and circumference. A chord and secant intersect a circle at two points, while a tangent intersects at one point.
- Angles can be central, inscribed, interior inscribed, exterior inscribed, depending on whether their vertex is at the center or on the circle.
- Other terms defined are arc, intercepted arc, and sector, which refer to portions of the circle.
7. Tangent ( Garis Singgung )
B
C
A line that intersects a
circle at exactly one
point.
A
Example: AB
8. Central Angle ( Sudut Pusat )
A
An angle whose vertex is
at the center of a circle.
B
Example: Angle ABC
C
9. Inscribed Angle ( Sudut Keliling )
๏An angle whose vertex is
B
A
C
on a circle and whose
sides are determined by
two chords.
๏Example: Angle ABC
12. Arc ( busur )
A figure consisting of two
points on a circle and all
the points on the circle
needed to connect them
by a single path.
Example: arc AB
B
A