Question

PLS ANSWER IT!!! CORRECTLY!! (URGENT)​

Answer 1

Answer:

1. 80°

2.(3x+10)°

Step-by-step explanation:

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Answer 2

Answer:

11. x=10°

10. 60°,30°

Step-by-step explanation:

11. if sum of two angles is equal to 90°

that's angles are called complementary angle

4x+20+2x+10=90°

6x+30°=90°

6x=90°-30°

6x=60°

x=60°/6

x=10°

10. sum of all angles of a triangle is equal to 180°

one angle is twice to other

let a angle is x

and 2nd angle is twice of 1st =2x

90°+2x+x= 180°

3x=180°-90

3x=90°

x=90°/3

x=30°

first angle 30°, 2nd angle is 60°