Respuesta :

Lol accelus,


Right angle = 90 degree’s,
Known angle = 45 degree’s
Unknown angle = 180-(90+45)

{We are subtracting by 180 because a triangle always has to add up to a 180 degree’s.}

180-(90+45)
180-135
45


Good day! Let me know if it helped!
CrystalQueen

Answer:

45°

Step-by-step explanation:

All of the angles in a triangle must add up to 180°.

This is a right triangle because of the presence of a right angle (denoted by the little box in the bottom left-hand corner). All right angles equal 90°.

You were given the value of another angle, 45°.

Therefore, the value of the final angle must be,

x + 90° + 45° = 180°

x + 135° = 180°

x = 45°

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