Question

Find the value of angle X in the following figure

Answer 1

4x+5x+90=180 (measure of angle of triangle)
9x+90=180
9x=180-90
9x=90
x=90/9
x=10
value of x= 10

Answer 2

Answer:

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Step-by-step explanation:

4x+5x+90°=180° [by using angle sum property of triangle]

9x+90°=180°

9x=180°-90°=90°

9x=90°

x=90°/div 9

x=10°

5*10°=50°

4*10°=40°

3rd angle=90°

VERIFICATION:

50°+40°+90°=?

90°+90°=180°ANS