Question

Please help me solve this problems

Answer 1

m angle FED is 35 degrees

Explanation:

line DE is bisecting RF.

linear lines have a 180 degree angle.

you are given that m angle RDE is 100, meaning you can subtract 180-100 to find angle FDE.

angle FDE is 80 degrees.

in EVERY triangle, all of the angles always add up to 180 degrees. Knowing this, you can subtract 80 and 65 from 180 to find the missing angle.

180 - 80 - 65 = 35

m angle FED is 35 degrees

Answer 2

35 degrees.

Explanation:

Since that the line that the exterior 100 degree angle is on is a straight line (which is 180 degrees) we can clearly see the supplementary angle is 180-100 which is 80. A triangle's interior angles add up to 180 degrees which means the missing angle is 180-80-6535 degrees.