Question

pls answer this question its really urgent​

Answer 1

Answer:

270 degree or 3pi/2 rad

Step-by-step explanation:

First Join AD,

Here Triangle ADE forms a right angle triangle (PROPERTY)

Hence,

∠ADE = 90

Then,

∠ABC + ∠ADE + ∠ADC =270

∠ABC + ∠CDE = 270