Respuesta :

mhraza2003

Answer:

Step-by-step explanation:

for angle <ADB= 90-31= 59 degrees

for angle <ACD=  ACD have the same shape like BDC so it will be 31 degrees

for angle< DBC= remember ADB and ABD are same so the angle ADB is equal to ABD. So it is 59 degrees.

for angle<DEC= Add both angles  C and D  31 and 31.

so

<DEC+31+31=180

<DEC+62=180

<DEC=180-62

<DEC= 118DEGREES

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