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Geometry
Guided Notes
Angle Bisectors
Angle Bisectors
Name: ______________________________
Date: _________________ Period: ______
_________________________ - a ray that divides an angle into two congruent adjacent angles.
Angle Bisector of a Triangle – a segment that _________________________ one of the angles of the
triangle.
An ANGLE BISECTOR OF A TRIANGLE _______________________ STARTS AT A ________________!
A triangle has ________________ angle bisectors!
The ______________________ between a point and a line is ___________________________________
_____________________ from the point to the line.
______________________________________________ - if a point is on the ___________________ of
an angle, then it is equidistant from the two sides of the angle.
_________________________________________ - if a point is in the ____________________ of an
angle, and __________________________ from the sides of the angle, then it lies on the bisector of the
angle.
Geometry
Guided Notes
Angle Bisectors
Example #1: Find the value of x.
Name: ______________________________
Date: _________________ Period: ______
Example #2: Find the value of x.
Example #3: Find the m∡ABC, if ̅̅̅̅̅ is an angler bisector of ΔABC.
Example #4: ̅̅̅̅ is an angle bisector of ΔABC. Find the value of x if the m∡BCA is 80°.
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