Answer:
angle 1= 31°
angle 2= 121°
angle 3 =47°
Explanation:
finding 1:
angles in a triangle equal 180°
to find remaining angle add up the angles you know and subtract them from 180
right angle equals 90°
90+59= 149
180-149= 31
finding 2:
angles on a straight line equal 180°
subtract known angle from 180 to find angle
180-59=121
finding 3:
angles in a triangle add up to 180°
to find remaining angle add up the angles you know and subtract them from 180
12+121=133
180-133= 47