Answer:

Lenght of the equal sides: 
Step-by-step explanation:
You can observe in the picture that the triangle have two angles that have equal measure; therefore, it is an Isosceles triangle.
By definition, Isosceles triangles have two equal angles and two equal sides.
Based on this, you can write the following equation:

Solving for "x", you get this value:

Finally, you can subsitute the value of "x" into any expression to find the lenght of the equal sides:

Answer:
I think it is 38 centimeters.
Step-by-step explanation:
<span>(7x - 20) + (4x) =180
(7x + 4x) - 20 = 180
11x = 200
x = 200/11
Hope it helps
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