It 's an isosceles triangle if you look carefully. 2 Sides of the triangle are equal which is denoted by those marks. The angles opposite to the equal sides are always equal, so: 
By angle sum property, 
52 degrees is the answer: Option D :D
Answer:
$71
Step-by-step explanation:
First you multiply 62×0.15 to get the amount of tip which is 9.3
Next add together 9.3 and 62 to get the total bill which is 71.3
Finally round to the nearest dollar which is $71
17.90/22.95 = x/100
22.95x=1790
1790÷22.95= 77.99
x= 78% (estimated)
Answer: The sweater is 78% off