Question

plz answer these all question ​

Answer 1

Answer:

13) both x and y angles are 30° only,because the exterior angles of a triangle are equal to interior angles

Step-by-step explanation:

the length of third side be less than 15+12=27

third side < 27

12 + third side > 15

third side should be greater than 3

And at last the side should be fall between

3< third side> 27 (greater tha 3, and lesser than 27 the value of third should fall)