Question

two angles in a triangle are 45°&55°,then the third angle?

Answer 1

Let the third angle be x
→ 45+55+x = 180° (Angle sum property)
→ 100+x = 180
→ x = 180-100
→ x = 80°

Third angle measures 88°

EmoLord.

Answer 2

let third angle be x
45 +55+x=180
100+x=180
x=180-100
x=80