A. Bisectrice (garis bagi)
- explanation : bisectrice is a line that divide an angle of triangle become two angles that both have same size.
- sentence : A triangle consist of three bisectrices that intersect in one point.
B. Grasp (menggenggam, memahami)
- explanation : widw-reaching power of intellect to comprehend subject and hold them under survey.
- sentence : Each student must understand the mathematical formulas to solving the problem of mathematics.
C. Garis tinggi (high)
- explanation : the line that was drawn from an angle of triangle that is perpendicular on a side opposite is called high of that triangle.
- sentence : The high could be used to count the area of the triangle.
D. Subruang (subspace)
- definition : sub-set W from a vector space- V is named subspace-V if W is vector space under scalar addition and multiplying that defined on V.
- sentence : To proof that W was subspace from V must use 4 theorems.
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