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Quadrilateral Investigation
Author:
Debra Schneider
Measure sides, slopes and angles to investigate properties.
Remember Parallel lines have the same slopes. Perpendicular lines have opposite reciprocal slopes (a/b and -b/a) Perpendicular lines form right angles.
Measure angles and line segments
Kite
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Trapezoid
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Isosceles Trapezoid
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Parallelogram
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Rectangle
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Rhombus
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Square
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New Resources
Poorly Drawn Parallelograms 2
Droste effect draft
Construct a Conic
Average Rate of Change: Graph a Function (1)
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Discover Resources
Unfinished Applet: Please Ignore
Transformations and Congruence 1
fransk
Images 2. Truncated icosidodecahedron (V=120) from Biscribed Pentakis Dodecahedron for the case of trisection of its 4th-order segments
Fourty Five 45 90 Triangle
Discover Topics
Natural Numbers
Differential Equation
Statistics
Square
Dilation