This document provides instructions on using mathematical instruments and defines key terms. It discusses the objectives of learning to use a set square, ruler, compass, and protractor to construct lines and angles. It defines different types of lines like perpendicular, horizontal, vertical, and parallel lines. It also defines types of angles such as right, acute, obtuse, straight, reflex, complementary, and supplementary angles. It provides details on constructing specific angles of 60, 90, and 45 degrees.