Question

1. use the given information and the diagram to find the value of the variable.

20
30
40
50

Explanation:

Step1: Recall the definition of a right angle

A right angle is \(90^{\circ}\).

Step2: Set up the equation

Since \(70^{\circ}+x^{\circ}=90^{\circ}\) (the two angles form a right - angle).

Step3: Solve for \(x\)

Subtract \(70^{\circ}\) from both sides of the equation: \(x = 90 - 70\).

Answer:

\(20\)