Answer:
x= 4
Explanation:
you can tell the angle on the left triangle are congruent because of the three arcs in the corner. This also means the sides are the same length. Now if the side of the top triangle is the same size as one of the sides of the smaller triangle then it must be five as well. as you can see on the top trinagle, the two small corners have the same arcs which mean they are the same angle. This also means that like the small triangle, the two correspnding sides are the same length. if the x+1 side is the same length as the side touching the smaller triangle then the x+1 side is 5 units long, since the small tringles side is labeled. Now x+1=5. this equation solved is x=4 therefore the value of x is 4.
Hope this helps.