Warm-Up (6 th Hour) On scratch paper draw the following: A line segment, AB. An angle, ACB. Find the point that exactly in the middle of your line and.

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Presentation transcript:

Warm-Up (6 th Hour) On scratch paper draw the following: A line segment, AB. An angle, ACB. Find the point that exactly in the middle of your line and label it M. Draw a ray, CB, through your angle exactly through the middle.

Warm-Up (2 nd & 3 rd Hour) You will need a protractor for today’s warm-up. They are located at the back of the room. On a piece of scratch paper, draw an obtuse angle AND an acute angle.

Warm-Up (7 th & 8 th Hour) You need a protractor AND worksheet. Both are located at the back of the room. Using your protractor, find the measure of the angles on the worksheet.

Intro to Geometry – Day 5 Segment and Angle Bisectors

Example 1: Find the midpoint of DE with endpoints D(3,5) and E(-4,0).

Example 2: The midpoint of XY is M(3,-4). One endpoint is Y(-3, -1). Find the coordinates of X.

Example 3: JK bisects <HJL. Given that m<HJL=42 o, what are the measurements of <HJK and <KJL?

Extra Practice A cellular phone tower bisects the angle formed by the two wires that support it. Find the measure of the angle formed by the two wires. Cell Phone Tower wire 47 o

Example 4: In the diagram BD bisects <ABC. Find x and use it to find m< ABD, m<DBC, and m<ABC. A B C D (2x + 50) o (5x + 5) o

Homework Pg. 38 – 40 #18 – 32 even, 38 – 48 even

Geometry Supplies Each person needs a: Compass Ruler/Straightedge Protractor

Day 5 Continued… Making Constructions of Segments, Angles, and their Bisectors

Constructing Segment Bisectors & Midpoint Each person needs a: Compass Ruler/Straightedge Video Example 1

Constructing Angle Bisectors: Each person needs a: Compass Ruler/Straightedge Video Example 2