Question

if two angles of a triangle are 70 degree and 40 degree find its third angle name the triangle based on angle

Answer 1

sum of 3 sides of triangle should be equal to 180  degree
let the third degree be x
70+40+x=180
110+x=180
x=180-110
x=70 degree
it is an acute angled traingle

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Answer 2

by angle angle sum property of a triangle 70 degree+ 40 degree + x equals to 180 degree. now X equals to 180 degree - 70 degree+ 40 degree now X equalto 70 degree. the third angle of the triangle equals to 70 degree