The perpendicular bisector of a side of a triangle is a line perpendicular to the side and passing through its midpoint.
The angle bisector of an angle of a triangle is a straight line that divides the angle into two congruent angles.
A median of a triangle is a line segment drawn from a vertex to the midpoint of the opposite side of the vertex.
An altitude of a triangle is the perpendicular segment from a vertex of a triangle to the opposite side (or the line containing the opposite side).

(a) Altitude

m∠KML = 90° but JM ≠ ML (so not perpendicular bisector)

(b) perpendicular bisector

AD = DB and m∠BDE = 90°

QS = QR ⇒ S is the midpoint QR, BUT it is not perpendicular to QR, so median

4 0

2 years ago

Alex777 [14]

Answer:

Step-by-step explanation:

CEAD makes a quadrilateral

D and D are 90 degrees since it is tangent

C + E + A + D = 360

C + 90 + 130+ 90 = 360

C +310 = 360

Subtract 310 from each side

C = 50

3 0

3 years ago

Fudgin [204]

Answer:

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Step-by-step explanation:

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6 0

3 years ago