Can you compute the angle ori the in the fiqure below?
'(##VPU_TTT_MAT_VII_C01_E01_009_Q01##)'

Explanation

By drawing a perpendicular at D and splitting this angle into two:
`therefore angle ADE=.90^(circ)`
Then `angle C D E=130^(circ)-90^(circ)=40^(circ)`
`angle BDE=90^(circ)`
`therefore angle B D C=90^(circ)-40^(circ)=50^(circ)`,