Unit 5 Part 1
Perpendicular Bisector, Median and Altitude of
Triangles
Midpoint of a segment
Perpendicular Bisector Any point on the perpendicular
bisector of a line segment is equidistance from the endpoints of the segment.
Perpendicular Bisector of a Triangle.
The perpendicular bisector of a triangle is formed by constructing perpendicular bisectors of each side of the triangle.
GeoGebra File Perpendicular bisector
Circumscribed circle
Median of a Triangle The median of a triangle is the line
segment from a vertex to the midpoint of the opposite side of that vertex.
GeoGebra File
Altitude of a Triangle
Altitude also known as the height.
Angle Bisector Any point on the angle bisector is
equidistance from the sides of the angle.
Solve for ‘x’.
3x – 10
2x + 18
3x – 10 = 2x +18 - 2x - 2x
x – 10 = 18 +10 + 10
x = 28 x
Angle bisector of a triangle. GeoGebra File
Angle bisector
Inscribed circle
Draw AB is a median of ∆BOC RA is the altitude and median of
∆RST AE and CD are ∠ bisectors of ∆ACB
and intersect at “x”. FS and AV are altitudes of ∆FAT
and intersect outside the triangle.
SN
EL
RM
SM is an _______________ of ∆RSE. If SN = NE, then RN is a _____________
of ∆RSE. If ∠SNL is congruent to ∠LER, then
LE is an ____________________ of ∆RSE. SN = NE, therefore NT is a
___________________ of ∆RSE
T
AltitudeMedian
Angle Bisector
Perpendicular Bisector
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