Question

in △def, de = 25 cm, ef = 17 cm, and df = 20 cm. which angle in the triangle is the smallest? a ∠f b ∠e c ∠d

Explanation:

Step1: Recall angle - side relationship

In a triangle, the smallest angle is opposite the shortest side.

Step2: Identify the shortest side

Given $DE = 25$ cm, $EF=17$ cm, and $DF = 20$ cm. The shortest side is $EF$.

Step3: Determine the opposite angle

The angle opposite side $EF$ is $\angle D$. So the smallest angle is $\angle D$.

Answer:

A. $\angle F$