Answer:
Step-by-step explanation:
There are three rules in mathematics that help us solve this problem:
1. Angles opposite the vertex measure the same.
2. All the interior angles of a triangle add up to 180 °
3. All angles that share a vertex add up to 360 °
So, we have that the angle opposite the vertex to the angle that measures 116 ° must measure the same: 116 °
So, we have two angles of 116°, so we add, 116 + 116 = 232
360 - 232 = 128
The other two opposite angles (of which one is an internal angle of the triangle) add up to 128
Since they are opposite by the vertex, they measure the same, so we divide by two and it gives us the value of each one:
128/2 = 64
So, if we know by the second rule, 64 + 56 + f = 180
We resolve:
120 + f = 180
(120 + f) - 120 = 180 -120
f = 60
The value of the angle F is 60°