Step-by-step explanation:
2 angles of same length
all angles in a triangle add to 180
so
if the angles are m∠A, m∠B, m∠C, then
either m∠A=m∠B or m∠B=m∠C or m∠A=m∠C
anyway
so if we assume that vertex B is the one that has a twin then
130+130+?=180
260+?=180
?=-80
false, we can't have a negative angle measure
so 130 must be the odd one
?+?+130=180
2?+130=180
2?=50
?=25
so
m∠A=m∠C=25°
let's test the 2nd answer choice
m∠A+m∠B=25+130=155, yep
test 3rd
m∠A+m∠C=25+25=50≠60, nope
not 3rd one
so answer is 2nd statement
m∠A+ m∠B = 155°