Respuesta :
75.5 degrees. correct me if im wrong.
explanation: all the angles in every triangle add up to 180 degrees. by using this knowledge, just add 92.1 and 12.4 to get 104.5 and then subtract that from 180 to get the measure of angle EDF, which should be 75.5 degrees.
The sum of the angle of the triangle is 180 degrees. Then the measure of angle ∠D is 75.5°.
What is the triangle?
Triangle is a polygon that has three sides and three angles. The sum of the angle of the triangle is 180 degrees.
Given
In triangle DEF, the measure of angle ∠F is 12.4° and the measure of angle ∠E is 92.1°.
Then the measure of angle ∠D will be.
We know that the sum of the angle of the triangle is 180 degrees. Then
∠D + ∠E + ∠F = 180°
∠D + 92.1° + 12.4° = 180°
On simplifying, we have
∠D = 180 - 92.1 - 12.4
∠D = 75.5°
Thus, the measure of angle ∠D is 75.5°.
More about the triangle link is given below.
https://brainly.com/question/25813512