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itsbribro
All you have to do to find this answer is add 102 and 31. which you would than get 133. After that you would take 180 and subtract 133. Than you would get 47.

47 is your answer!!
Hope i helped ^-^

Answer:

Measure of angle x is 47°.

Step-by-step explanation:

We are given a triangle with measure of two angles given as 102° and 31°.

We have to find the value of third angle .

Angle sum property of a triangle states that the sum of angles of a triangle is always 180°

Lets name the triangle first as ΔABC,

Applying angle sum property

∠A + ∠B + ∠C = 180°

Substitute the values, we get,

x°+ 102° + 31° = 180°

x°+ 133° = 180°

x°= 180° - 133°

x° = 47°

Thus, measure of angle x is 47°.


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