Question

In triangle DEF, if the measures of angles D and E are equal, and the measure of

angle F is 26, what are the measure of angles D and E?
Your answer

Answer 1

77 = m∠D = m∠E

Explanation:

In a triangle the sum of the measures of the angles = 180. So m∠D + m∠E + m∠F = 180

Let m∠D = m∠E = x

Then x + x + 26 = 180

2x + 26 = 180

2x = 154

x = 77 = m∠D = m∠E