Question

if two angles of a tringle are 40 degree and 60degree then. find the third triangle?find all the outer angle?​

Answer 1

Answer:

80°

Step-by-step explanation:

The sum of all angles of a triangle are 180°

40° + 60° + third angle = 180°

100° + third angle = 180°

third angle = 180° - 100°

third angle = 80°

Answer 2

Answer:

Step-by-step explanation:

hey mate here is your answer:

given,

two angles in a triangle= 40degrees,60degrees.

to find,

third angle, outer angle

formulas required:

$sum of three angles in a triangle=180degrees$

$sum of adjacent angles=180degrees$

solution,

let the third angle in a triangle be x.

.:x+40+60=180

x+100=180

x=80degrees

sum of adjacent angles=180degrees

.:

x+y=180

80+y=180

y=100