A side of the triangle below has been extended to form an exterior angle of 155°. Find the value of xx.

Step-by-step explanation:

Find a similar diagram attached

Let the exterior angle be 155°

The sum of interior angle is equal to the sum of the exterior angle of the triangle

Interior angle are angles inside the triangles

Sum of interior angles = 90 + x

Exterior angles are those outside the triangle.

Exterior angle = 155°

Since sum of interior = exterior, hence;

90 + x = 155

x = 155 - 90

x = 65°

Hence the value of x is 65°

Note that the same concept can be used for any other triangle extending to form an exterior angle

well if he bought them at 5 cedis each sold them at 7 cedis each then he would make a profit of 2 cedis of each book. if in total he made 150 cedis profit that means he sold 75 books. he lost 12 books at the start so that means he originally bought a total of 82 books.

step-by-step explanation: