Question

the diagram shows a triangle. what is the value of u? u = °

Explanation:

Step1: Recall angle - sum property

The sum of interior angles of a triangle is 180°.

Step2: Set up the equation

Let the three angles of the triangle be 100°, 30°, and \(u\). So, \(100 + 30+u=180\).

Step3: Solve for \(u\)

First, simplify the left - hand side: \(130 + u=180\). Then, subtract 130 from both sides: \(u=180 - 130\).

Answer:

50