Lesson 4.6 Angle Constructions pp. 150-153.

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Presentation transcript:

Lesson 4.6 Angle Constructions pp. 150-153

Objectives: 1. To review the qualities of good construction. 2. To identify the procedure for bisecting an angle. 3. To identify the procedure for copying an angle.

Quality constructions require: 1. Sharp pencil points. 2. Crisp arc marks that look like an eyelash. 3. Tic marks on lines and segments to locate points.

Quality constructions require: 4. A backing page or piece of tagboard to keep the fixed point of the compass in the paper. 5. Large enough constructions that the compass points do not have to be close together.

Homework pp. 152-153

■ Cumulative Review 21. A circle with AB as a diameter Construct the following. 21. A circle with AB as a diameter A B C D E F

■ Cumulative Review 22. Perpendicular bisector of EF Construct the following. 22. Perpendicular bisector of EF A B C D E F

■ Cumulative Review 23. A segment of length AB + ½EF Construct the following. 23. A segment of length AB + ½EF A B C D E F

■ Cumulative Review Construct the following. 24. A rectangle with length equal to CD and width equal to ½CD A B C D E F

■ Cumulative Review 25. A right triangle with legs of length AB and CD Construct the following. 25. A right triangle with legs of length AB and CD A B C D E F