Number one is the 2nd choice
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.
Answer:

Step-by-step explanation:


(Must make both denominators same number, which would be 12)

(Multiply both the numerator and denominator of by 3 and/or 4 for the specific fraction)

(Subtract the fractions)

That's how you get your answer!
Answer
yes it is correct
Step-by-step explanation: