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∠1 = 140

∠2 = 40

∠3 = 65

∠4 = 75

 ∠5 = 115

Step-by-step explanation:

3) ∠1 =  80 + 60       { Exterior angle of a triangle is equal to the sum of            opposite interior angles}

∠1 = 140

∠1 = 140

∠2 + ∠1   = 180    {linear pair}

         ∠2 = 180 - 140 = 40

∠2 = 40

∠4 + 105 = 180     {linear pair}

       ∠4 = 180 - 105 = 75

∠4 = 75

∠2 + ∠3 = 105   { Exterior angle of a triangle is equal to the sum of            opposite interior angles}

40 +  ∠3 = 105

        ∠3 = 105 - 40 = 65

∠3 = 65

 ∠5 =   ∠4 + 40  

        ∠5 = 75 + 40  = 115

 ∠5 = 115

answer: a. 13/44

step-by-step explanation: judging by the information given to us, we are looking for experimental probability. we can see that 13 males have chosen chocolate ice cream. there are 44 ice creams in total (remember that the total is always the denominator). so our answer is 13/44.

sas (side angle side)

aa(angle angle)

sss(side side side)

sas you have to find two sides with an angle in between

aa you find two angles because it will always add up to 180

sss find all sides

step-by-step explanation: