Question

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Answer 1

Answer:

x=100

measure of angles are 60°, 80° and 40°

Step-by-step explanation:

sum of all angles of a triangle=180°

x-40+x-20+x/2-10=180°

x+x+x/2-40-20-10=180°

(2x+2x+x)/2-70=180°

5x/2-70=180°

(5x-140)/2=180°

5x-140=180×2

5x-140=360

5x=360+140

5x=500

x=500/5

x=100

(x-40)°=(100-40)°=60°

(x-20)°=(100-20)°=80°

(x/2-10)°=(100/2-10)°

=(50-10)°=40°