GEOMETRY AND MEASUREMENT Cengage（几何和测量Cengage）.pdfVIP

3 GEOMETRY AND MEASUREMENT CLAST MATHEMATICS COMPETENCIES IB1: Round measurements to the nearest given unit of the measuring device used IB2a: Calculate distances IB2b: Calculate areas IB2c: Calculate volumes IIB1: Identify relationships between angle measures IIB2: Classify simple plane figures by recognizing their properties IIB3: Recognize similar triangles and their properties IIB4: Identify appropriate units of measurement for geometric objects IIIBl: Infer formulas for measuring geometric figures IIIB2: Identify applicable formulas for measuring geometric figures IVB1: Solve real-world problems involving perimeters, areas, volumes of geometric figures IVB2: Solve real-world problems involving the Pythagorean theorem 132 3.1 MEASURING DISTANCE, AREA AND VOLUME In this Chapter we shall discuss the measurement of distances, areas, volumes and their applications. We shall then learn about the measurement of angles, the relationship between different types of angles, the classification of plane figures and similar triangles. A. Rounding Measurements Objective IB1 CLAST SAMPLE PROBLEMS 1. Round 43.846 to the nearest hundredth of a centimeter 2. Round 19,283 tons to the nearest ten thousand tons 3. Round 9 pounds, 6 ounces to the nearest tenth of a pound 4. Round the measurement of the screw to the nearest 1/4 inch In Section 1.3 we learned how to round numbers. We are now ready to round measurements in such units as feet, yards, centimeters, meters, pounds, and liters. 1 ROUNDING MEASUREMENTS RULE EXAMPLES 1. Underline the place to which you Round 38.67 centimeters to the nearest are rounding. centimet