Question

Please help me with this thanks!!

Answer 1

x° = 47°

Explanation:

The sum of the measurements of three interior Angles in a triangle is 180°.This is known as angle sum property.Same case is here.

78°,55° and x° are interior angles here.

So,

• 
  `78{}^( \circ) + 55 {}^( \circ) + x {}^( \circ) = 180 {}^( \circ)`

Solving for x°,

• 
  `133 {}^( \circ) + x {}^( \circ) = 180 {}^( \circ)`
• 
  `x {}^( \circ) = 180 {}^( \circ) - 133 {}^( \circ)`
• 
  `x {}^( \circ) = \boxed{47 {}^( \circ) }`

Hence,the value of x° is 47°.

Answer 2

Answer: 47°

Explanation:

In a Triangle the Sum of all the Angles equal to 180° (Angle Sum Property)

Therefore,
x + 78 + 55 = 180
x + 133 = 180
x = 180 - 133
=> x = 47

Hence, ∠x = 47°