Answer:
vertical angles
∠1 and ∠3 are vertical angles. Their measures are equal, so m∠3 = 90 . ∠1 and ∠2 are supplementary.
Step-by-step explanation:
Remember in every triangle, the sum of the angles adds to 180 degrees. So let us call the smallest angle's measure "A". The largest angle is 3A and the third angle is A+10. So A + 3A + (A + 10) = 180.
If u check your answer on google ithink u can get
It is A and D because as you can see it is using subtraction and multiplication and I’m sorry if I am wrong I can’t see much
I just need points I’m sorry :(
Write full questions is that....