Triangles ABC and DEF are similar triangles. What are the lengths of the unknown sides? Question 10 options: A) DE = 24 yd.; EF
= 15 yd. B) DE = 18 yd.; EF = 10 yd. C) DE = 24 yd.; EF = 10 yd. D) DE = 18 yd.; EF = 15 yd.
1 answer:
You might be interested in
Answer:
x = 40°
Step-by-step explanation:
Given that ∠SRT ≅ ∠STR
Then ∠STR = 20
∠STR and ∠STU are what you call supplementary angles. This means that the sum of their measurements is equal to 180° because they form a straight line.
So if:
∠STR + ∠STU = 180°
m∠STU = 4x
m∠STR = 20
Then:
4x + 20° = 180°
Now we solve for x:
x = 40°
