What is the third angle of a triangle whose 1st angle is 34 and 2nd angle is 101 I meant sorry lol

The third angle is 55 degrees.

Step-by-step explanation:

1) The three angles of a triangle always add up to 180 degrees. So, add together 34 + 101 = 135.

3) Then, subtract 180 - 135 = 55 degrees, and this is the missing angle!

I hope this helps! Feel free to give me Brainliest if you feel this helped. Have a good day, and good luck on your assignment. :)

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc