Question

the second angle of a triangle is 15 degree less than twice the first angle the third angle is 20 degree more than the second angle find the three angles​

Answer 1

Step-by-step explanation:

Take the angles as x, y and z.

Then create an equation with the given data.

Substitute it in the angle sum property equation and find the value of x.

Then substitute the value of x in the equation made with the data.

Answer 2

Answer:

first angle=38°

second angle=61°

third angle=81°

for explation see the photo above