Noteables Interactive Study Notebook (26491.0K) - McGraw-Hill ...

203015030150170109–2Estimating and Drawing AnglesEXAMPLE Estimate Angle MeasureMAIN IDEA• Estimate measuresof angles and drawangles.Estimate the measureof the angle.The angle is greater thanand less than. So, a reasonable estimate is about .REMEMBER ITWhen you checkyour answers forreasonableness, keep inmind that a right anglemeasures 90° and thathalf of a right anglemeasures 45°.Check Your Progressthe measure of the angle.EstimateCopyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.EXAMPLE Draw an AngleUse a protractor and a straightedge to draw a 39° angle.Step 1 Draw one side of the angle. Then mark theand draw an arrow.Step 2 Place thevertex. Align the mark labeledwith the line. Findmake a dot.40501301406012070110801009010080110701206013050of the protractor on theon the protractoron the correct scale and140401601602010170(continued on the next page)Math Connects, Course 1 223