Given BD bisects ABC ABD 3x 10 ABC 3x 64 Find the measure of x and angles ABD ABC DBC Measuring Angles White Boards httpwwwmathplaygroundcommeasuringangleshtml Draw the following angles White Boards ID: 375367
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Slide1
Bell Ringer
Given
BD
bisects ABC
ABD = 3x + 10
ABC = 3x + 64
Find the measure of x and angles
ABD
ABC
DBCSlide2
Measuring Angles: White Boards
http://www.mathplayground.com/measuringangles.htmlSlide3
Draw the following angles: White Boards
30Slide4
Draw the following angles: White Boards
30Slide5
Draw the following angles: White Boards
60Slide6
Draw the following angles: White Boards
60Slide7
Draw the following angles: White Boards
90Slide8
Draw the following angles: White Boards
90Slide9
Draw the following
angles: White Boards
150Slide10
Draw the following
angles: White Boards
150Slide11
Draw the following angles: White Boards
180Slide12
Draw the following angles: White Boards
180Slide13
Draw the following
angles: White Boards
270Slide14
Draw the following
angles: White Boards
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Draw the following
angles: White Boards
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Draw the following
angles: White Boards
330Slide17
Rotating About a Point
Draw a line from each point to the point of reflection Use
protractor
to
draw an angle
of the
given
degrees
Measure
distance
from the
point
to the
line
Measure
that
distance
on your angle
for each
point
Draw your new pointSlide18
Bell Ringer
Given: BD bisects ABC Find the measure of x and anglesABDABCDBCSlide19
Objective
Use a protractor to measure and create anglesUse a protractor to rotate figures around a coordinate planeSlide20
Measuring Angles: White Boards
http://www.mathplayground.com/measuringangles.htmlSlide21
Best Practices: Protractors
Talk to Partner Determine Best Ways to Use a Protractor Slide22
Best Practices: Protractors
Rotate the crossbar to the vertexDecide if the angle is acute, right, or obtuse Determine whether to use outside measure or inside measure Slide23
Draw the following angles: White Boards
30Slide24
Draw the following angles: White Boards
30Slide25
Draw the following angles: White Boards
45Slide26
Draw the following angles: White Boards
45Slide27
Draw the following angles: White Boards
60Slide28
Draw the following angles: White Boards
60Slide29
Draw the following angles: White Boards
90Slide30
Draw the following angles: White Boards
90Slide31
Draw the following angles: White Boards
180Slide32
Draw the following angles: White Boards
180Slide33
How would you Draw an Angle with a Protractor?
Draw a straight linePlace crossbar of the protractor on the center of the lineMark spot of degree you wish to measure and label it
Use straight edge to draw a line to your spotSlide34
Rotating About a Point
Join each point to the point of reflectionUse your protractor to draw an angle of the given degrees (counterclockwise)Measure distance from the point to the line
Measure that distance on your angle for each point
Draw your new point