Question

practice d: (first taught in lesson 42) find z. (90 - z)° 2z° after you enter your answer press go. z =

Explanation:

Step1: Use vertical - angle property

Vertical angles are equal. So, $90 - z=2z$.

Step2: Solve the equation

Add $z$ to both sides of the equation: $90 - z+z=2z + z$. This simplifies to $90 = 3z$.

Step3: Isolate $z$

Divide both sides of the equation $90 = 3z$ by 3: $\frac{90}{3}=\frac{3z}{3}$. So, $z = 30$.

Answer:

$30$