Find the unknown marked angles

Dear Student,

L e t t h e t h i r d a n g l e i n t h e t r i a n g l e b e x ° S u m o f a n g l e s a l o n g a s t r a i g h t l i n e i s 180 ° 135 + x = 180 x = 180 - 135 x = 45 ° s u m o f a n g l e s o f a t r i a n g l e = 180 ° 73 + 45 + a = 180 118 + a = 180 a = 180 - 118 a = 62 °

Regards