Question

A Triangle has a 30° angle and a 55 degree angle what is the other angle how do you know?​

Answer 1

...the sum of the angles of a triangle = 180°

the triangle has an angle of 30° and an angle of 55°

the 3rd angle makes

Explanation:

Answer 2

other angle = 95°

Explanation:

the sum of the 3 angles in a triangle is 180°

let the third angle be x , then sum the 3 angles and equate to 180°

x + 30° + 55° = 180°

x + 85° = 180° ( subtract 85° from both sides )

x = 95°