Someone can help me pleaseeee, for tonight with 2 or 3 will be fine
FIND THE LENGTH

4)..21 units

5). 15 units

6). 25 units

Step-by-step explanation:

4). Since ΔABC ~ ΔDEF,

   Their corresponding sides will be proportional.

   Since,

   x =

   x = 21 units

5). Since ΔABC ~ ΔDEF,

   x = 15 units

6). Since ΔABC ~ ΔDEF,

   x = 25 units

answer:

the correct option is d. 54°

step-by-step explanation:

for better understanding of the solution, see the attached figure :

given : cd and de are tangent to the circle. measure of arc ac = 126°

to find : measure of ∠cde

solution : measure of arc ac = 126°

⇒ ∠cae = 126°

now, as radius is perpendicular to the tangent of the circle

⇒ ∠aed = 90°

similarly, ∠acd = 90°

now, in quadrilateral sum of all the angles is 360°

⇒ sum of all the angles of quadrilateral aedc is 360°

⇒ ∠aed + ∠acd + ∠cae + ∠cde = 360°

⇒ 90° + 90° + 126° + ∠cde = 360°

⇒ 306° + ∠cde = 360°

⇒ ∠cde = 54°

hence, the measure of angle cde = 54°

therefore, the correct option is d. 54°