Question

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Answer 1

124 degrees

48 + 76 = 124

180 - 124 = 56

Angle 1 = 180 - 56

124 degrees

Proof

the line is = to 180 degrees in total ( just imagine it like 180 degree gymnastics splits )

now you say angle (let's call it angle 4) is 56 degrees. so since it's at the bottom where angle one is, you say 180 - 56

another method is to say, 180 - the angle that you found (angle 4) and the answer is 56 in your case, you still get the same 124 degrees which is now the missing angle for angle 1

Answer 2

Explanation:

You should do 76 + 48 to get 124 and since the triangle is 180 you would do 180 minus 124 and you would get 56