Polygons
The Chinese meaning of “triangle”
三角形
The Chinese meaning of “coefficient”
系数
An integer divisible by 2
The side opposite the right angle in a right triangle
斜边 / Hypotenuse
Money earned from work
主动收入 / Active income
The Chinese meaning of “quadrilateral”
四边形
The Chinese meaning of “constant term”
常数项
A number greater than 1 with only 1 and itself as factors
质数
Sine of 90°
1
Money earned without working actively
被动收入 / Passive income
A polygon with 9 sides
Nonagon / 九边形
The product of the roots of x² - 5x + 6 = 0
6
The Chinese meaning of “prime factor”
质因数
The Chinese meaning of “cosine”
余弦
Money spent regularly, same each month
固定支出 / Fixed expenses
Sum of interior angles of a hexagon
720°
The sum of roots of x² - 7x + 10 = 0
7
Find LCM of 6 and 8
24
The formula: sin²θ + cos²θ = ?
1
Money spent that varies each month
可变支出 / Variable expenses
A polygon with all sides equal and all angles equal
Regular polygon / 正多边形
Factorise x² + 5x + 6
(x+2)(x+3)
Find HCF of 36 and 48
12
The ratio of opposite side to adjacent side
tangent
Interest calculated on previous interest as well
复利 / Compound interest