GRE Quant · Chapter Test
Quadrilaterals & Polygons — 25-Question Test
A fresh, mixed-difficulty set drawn from the whole chapter — questions you haven't been asked before. Auto-graded with full solutions; your result is saved to your dashboard.
Building your 25-question test…
Formula Reference Sheet
This chapter
Polygon angles
| Sum of interior angles (n sides) | (n − 2) × 180° |
|---|---|
| Each interior angle, regular polygon | (n − 2) × 180° / n |
| Sum of exterior angles | 360° (any polygon) |
| Each exterior angle, regular polygon | 360° / n |
Area & perimeter
| Rectangle | Area = l × w, Perimeter = 2(l + w) |
|---|---|
| Square, side s | Area = s², Perimeter = 4s |
| Parallelogram | Area = base × height |
| Trapezoid | Area = ½ (b₁ + b₂) × height |
GRE reference
🖩 Graphing Calculator