fieiedissuisis fieiedissuisis
  • 08-04-2020
  • Mathematics
contestada

Help please and thanks

Help please and thanks class=

Respuesta :

mhanifa
mhanifa mhanifa
  • 29-08-2020

Answer:

D. m∠ADC = 180° - m∠ABC

Step-by-step explanation:

Since AD⊥AB and CD⊥CB

In ABCD, ∠A=90°, ∠C=90°

So ∠B + ∠D = 180° as sum of 4 angles is 360°

Therefore the correct answer choice is:

  • D. m∠ADC = 180° - m∠ABC
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