Perpendicular Intersections 2

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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?

Nuevos recursos

רישום חופשי
Spherical dodecahedron/icosahedron
apec
z`]]
Vectors and Components - Trig

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Properties of Squares
christmas swirl
Level Curves Demo
RekenrekDP
ทดสอบสร้าง ggb & แชร์

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Cálculo de intereses
Pirámide
Función Tangente
Suma superior e inferior o suma de Riemann
Funciones escalonadas