Level {{step}} of 4
The Slope Sleuth
Drag the coordinates to find the slope of AB. Prove it's parallel to CD!
Point A
(1, 2)
Point B
(5, 4)
{{ chip.val }}
Slope =
m =
{{ s1.drops.y2 !== null ? s1.drops.y2 : 'y₂' }}
-
{{ s1.drops.y1 !== null ? s1.drops.y1 : 'y₁' }}
{{ s1.drops.x2 !== null ? s1.drops.x2 : 'x₂' }}
-
{{ s1.drops.x1 !== null ? s1.drops.x1 : 'x₁' }}
=
Slope of CD is also .
They are parallel!
They are parallel!
The Midpoint Mystery
Tap two opposite corners to find the midpoint of their diagonal.
{{ s2.instruction }}
Midpoint AC:
Midpoint BD:
The midpoints match exactly! The diagonals bisect each other.
Build a Rectangle
Adjust the sliders to move point D so that ABCD is a perfect rectangle.
X Coordinate (D)
{{ s3.dx }}
Y Coordinate (D)
{{ s3.dy }}
Perfect! Opposite sides are equal lengths and angles are 90°.
Hint: Look at the coordinates of A and C to find the missing corner.
The Master Classifier
Equip a tool and tap the mystery shape to gather evidence. Then classify it!
Tools
Evidence found: {{ s4.evidenceText }}
Tap shape to analyze