Question

hw checkpoint - isosceles triangles
1 numeric 1 point
find the missing value.
x=
answer
next

Explanation:

Step1: Use the property of isosceles triangle

In an isosceles triangle, the base angles are equal. So, \(4x - 20=3x\).

Step2: Solve the equation

Subtract \(3x\) from both sides: \(4x-3x - 20=3x-3x\), which gives \(x - 20 = 0\). Then add \(20\) to both sides: \(x-20 + 20=0 + 20\).

Answer:

\(20\)