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
1. It is always helpful to draw a diagram and label it with the given information. Then, using the first theorem above, set the exterior angle (x) equal to the sum of the two non-adjacent interior angles which are 45Â° and 72Â°. x = 45 + 72 x = 117. So, an exterior angle at P measures 117Â°.So, an exterior angle at P measures 117Â°.t is always helpful to draw a diagram and label it with the given information. Then, using the first theorem above, set the exterior angle (x) equal to the sum of the two non-adjacent interior angles which are 45Â° and 72Â°. x = 45 + 72 x = 117. So, an exterior angle at P measures 117Â°.