Question

the figure below is an isosceles triangle.
what is the sum of the angle measures of the isosceles triangle?
180
the figure below is an equilateral triangle.
what is the sum of the angle measures of the equilateral triangle?

Explanation:

Step1: Sum of angles in isosceles triangle

The isosceles triangle has angles \(70^\circ\), \(70^\circ\), and \(40^\circ\). Sum them: \(70 + 70 + 40 = 180\).

Step2: Sum of angles in equilateral triangle

The equilateral triangle has three \(60^\circ\) angles. Sum them: \(60 + 60 + 60 = 180\).

Answer:

For the isosceles triangle: \(180^\circ\)
For the equilateral triangle: \(180^\circ\)