Set Exact Dimensions (Integers)

cm
cm

Formula Display

• Parallelogram: Area = Base × Height
• Triangle: Area = (Base × Height) ÷ 2
• Trapezoid: Area = (Top Base + Bottom Base) × Height ÷ 2
• Find Height: (Area × 2) ÷ Base [Triangle]
• Find Base: (Area × 2) ÷ Height [Triangle]

Live Calculations / Quiz

Select any shape to view live dimensions, height lines, units, and area calculations.

Teacher Guide

  • Smooth Zoom In / Out: Drag the bright green handle on the bottom-right corner inward to shrink, or outward to enlarge.
  • Quiz Selection: Choose Find Height, Find Base, or Find Area from the top menu.
  • Keyboard Shortcut: Press Delete or Backspace to quickly remove the selected figure.