Perpendicular Intersections 2

Directions

In the picture Angle ADC and Angle BDC are congruent. What other details do we know about Angle ADC and Angle BDC? What relationship does Line AB and Line DC have?

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Untitled
רישום חופשי
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Transforming Random Variables
Parallelogram Linkage

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H-Fractions and Attached Text
CCSS High School: Functions (Linear, Quadratic, Exponential)
ParâmetroDoPontoSobreCaminho
Programación lineal
HG2cc

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Special Points
Polygons
Algebra
Pythagoras or Pythagorean Theorem
Subtraction