- Jari-jari ( Radius)=The common distance of the points of a circle from its centre.
- busur lingkaran ( circumference of circle )=the perimeter of the circle (especially when referring to its length).
- JUring ( sector ) is a region bounded by two radii and an arc lying between the radii.
- Tembereng ( segment) is a region bounded by a chord and an arc lying between the chord's endpoints.
Jajar Genjang (parallelogram) is a quadrilateral with two sets of parallel sides. The opposite or facing sides of a parallelogram are of equal length, and the opposite angles of a parallelogram are of equal size.
Aksioma ( axiom)=In traditional logic, an axiom or postulate is a proposition that is not proved or demonstrated but considered to be either self-evident, or subject to necessary deciyion. Therefore, its truth is taken for granted, and serves as a starting point for deducing and inferring other (theory dependent) truths.
In mathematics the term axiom is used in two related but distinguishable senses: logical axioms and non-logical axioms. In both senses, an axiom is any mathematical statement that serves as a starting point from which other statements are logically derived. Unlike theorems, axioms (unless redundant) cannot be derived by principles of deduction, nor are they demonstrable by matematical proof, simply because they are starting points; there is nothing else from which they logically follow (otherwise they would be classified as theorems).
Belah ketupat ( rhombus )=In geometry, a rhombus (from Ancient greek ῥόμβος - rhombos, “rhombus, spinning top”), (plural rhombi or rhombuses) or rhomb (plural rhombs) is an equilateral parallelogram. In other words, it is a four-sided polygon in which every side has the same length.
The rhombus is often called a diamond, after the diamons suit in playing cards, or a lozenge, because those shapes are similar rhombi, although rhombi are not necessarily diamonds or lozenges.
A rhombus is a variety of quadrilateral. A rhombus with right angles is a square (because modern mathematicians usually prefer inclusive definitions, though Euclid specifically excluded the square from his definition).
The dual polygon of a rhombus is a rectangle.
apotema ( apothem ) is height a triangle formed by two radius nearing and one side in polygon.
Sejajar (parallel) = Two lines in the plane are said to be parallel if they do not meet.
tegak lurus ( perpendiculare) = Two straight lines are said to be perpendicular if they meet at right angles.
Radian = A unit of angular measurement such that there are 2 pi radians in a complete circle. One radian = 180/pi degrees. One radian is approximately 57.3o.
Segibanyak ( Polygon )= the union of several line segments that are joined together so as to completely enclose an area.
sudut lancip ( acute angle )acute angle is a corner wich built by a rotation of less than a quarter of a circle but not the same as 0, the amount of 0-90 degrees.
Taken from various resources such :
mathematicss dictionary Fourth edition ( James )
http://http://www.wikimedia.com/
http://http://www.mathpropress.com/
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