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
In this section, we shall state and prove angle sum property of triangles. Here we will discuss some problems based on it. Theorem 1: The sum of all the angles of a triangle is 1800. Examples : 1) Two angles of a triangle are of measures 75 0 and 35 0 . Find the measures of the third angle.