Question

find measure of angle DEF​

Answer 1

Step-by-step explanation:

angle FDB=70 (corresponding angles)

angle EDC=60(corresponding angles)

angle FDE=

$60 + 70 + fde = 180 \:( linear \: pair) \\ fde = 180 - 130 \\ = 50$

angle BDE=FDB+FDE

$70 + 50 = 120$

DEF=

$180 - 120 = 60(co \: interior \: angles)$

therefore DEF=60

(4)