GRE
The average of all the interior angles inside a quadrilateral
The average of all the interior angles inside a pentagon
x
y
The area of the shaded region
The sum of the areas of the two unshaded semicircular regions
The slope of the line k
1
R*-R
200
The number of unique prime factors of 27
The number of unique prime factors of 12
$$\frac{y}{k}$$
$$\frac{25}{16}$$
3
25000 +道题目
199本备考书籍