Step {{currentStep}} of 4
Slide to grow
Build a Rectangle!
Make the Area exactly {{ s1.targetArea }} square units.
{{ s1.fixed }}
Area = {{ s1.fixed * s1.currentMissing }}
{{ s1.currentMissing }}
Drag to label
Find the Side!
This square has a Perimeter of {{ s2.perimeter }}.
?
?
?
{{ s2.droppedValue || '?' }}
Perimeter
{{ s2.perimeter }}
{{ s2.perimeter }}
{{ opt }}
Tap to adjust
Match the Perimeter!
Adjust width to make Perimeter = {{ s3.targetPerim }}.
{{ s3.fixed }}
{{ s3.fixed }}
{{ s3.currentMissing }}
{{ s3.currentMissing }}
Solve to finish
The Mystery L-Shape
Tap the ? to find missing sides, then calculate total perimeter.
What is the length of this side?
Hint: Look at the Bottom ({{s4.wBottom}}) and Top ({{s4.wTop}})
Hint: Look at the Left ({{s4.hLeft}}) and Right ({{s4.hRight}})
Total Perimeter:
{{ s4.inputPerim }}
Awesome!
🏆
Geometry Master!
You've conquered area, perimeter, missing sides, and complex shapes!