My Difficult word to express mathematical idea

1. Opportunity : peluang
to state a origin that no sure yet.
2. Descendent : turunan
To use for searching a gradient.
3. Sequence : barisan
To consist a arithmatics sequence and geometry sequence.
4. Denominator : penyebut.
5. Solidus :garis miring
To separate between a numberator and denominator,example : ¾
6. Edge : Rusuk
A cube to possess twelve edge
7. Secant : garis potong.
8. Mapping : pemetaan
F is mapping from S to T. so,S complex is domain of f and T complex is codomain of f mapping.
9. Common factor : factor persekutuan.
2,3,4,6,and 12 is common factor of 36 and 12.
10. Fraction : pecahan.
11. Rate : Laju
12. Elevation : Kemiringan.
13. Solid geometry : ilmu ukur geometri.
14. Concave : Cekung.
15. Consecutive : berurutan.
16. Comparition : Perbandingan
17. Approximation : Pendekatan.
18. Shadow reckoning : perhitungan bayangan.
19. Average : rata-rata.
20. Random sample : sample acak.
21. Adjacent angle :sudut berdampingan.
22. cone : kerucut
23. Bisecting line : garis bagi.
24. To join : berhimpit.
25. Alliance point : titik persekutuan.
26. whole number : bilangan cacah
27. Absolute: mutlak
28. Interchange : simpangan
29.Bow : busur
30. acute angle (sudut lancip)
31. obsute angle (sudut tumpul)
32. right angle (sudut siku-siku)