Question

What is the measure of E, in degrees?

O A. 1550
O B. 1300
O
C. Cannot be determined
O
D. 125°

Answer 1

B. 130

Explanation:

Since both sides of the triangle are 10, given that angle D is 25. We can conclude that angle F is also 25.

Total angle of triangle is equal to 180.

angle D + angle F + angle E = 180

25 + 25 + E = 180

50 + E = 180

E = 180 - 50

angle E = 130