After it dried, which took about two hours, I sanded it flush with the wood using #120-grit sandpaper, then stained the entire shelf. You have to look closely to see the spot where the nail hole had been! Quick Tip: Always sand in the direction of the grain of the wood to avoid unsightly scratches.
In the picture below, the angles â ABC, â BCA and â CAB are the three interior angles of the triangle. An exterior angle is formed by extending one of the sides of the triangle; the angle between the extended side and the other side is the exterior angle. In the picture, angle â ACD is an exterior angle. Euclid's exterior angle theorem
Best Answer: Hey there! The sum of all interior angles in a triangle is 180 degrees. The sum of all exterior angles in a triangle is 360 degrees. Use the formula. 180(n-2), where n is the number of sides. 180(3-2), substitute 3 for n. 180(1) subtract 2 from 3. 180 multiply 180 and 1.