EL-506V幾何
1. 三邊求三角形面積 (3 sides to find the area of triangle)
2. 圓內接四邊形四邊求面積 (4 sides to find the area of cyclic quadrilateral)
3. 四邊形面積(四邊及兩對角) (Area of quadrilateral (4 sides and 2 angles))
4. 綜合餘弦定律 (Combined cosine laws)
5. 綜合正弦定律(I) (Combined sine laws I)
6. 綜合餘弦定律及三角形面積 (三合一) (Combined cosine laws and area of triangle)
7. 綜合正弦定律(II) (Combined sine laws II)
8. 綜合餘弦定律及三角形面積(I) (Combined cosine laws and area of triangle I)
9. 綜合餘弦定律及三角形面積(II) (Combined cosine laws and area of triangle II)