Question

what is m∠wxz?
m∠wxz = \square^\circ
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(image shows angles at point x: between wx and xy is 40°, between xy and xz is 115°)

Explanation:

Step1: Sum of angles at point X

Angles around a point sum to $360^\circ$.

Step2: Calculate unknown angle

Let $m\angle WXZ = x$. Then $40^\circ + 115^\circ + x = 360^\circ$. Solve for $x$: $x = 360^\circ - 40^\circ - 115^\circ = 205^\circ$.

Answer:

205