Download regular polygon

Geometry Vocabulary
Geometry - branch of mathematics that deals
with points, lines, planes and solids and
examines their properties.
• Types of the line of the triangle
• Polygon
POLYGON
REGULAR POLYGON
POLYGON
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Parallelogram – quadrilateral with both pairs of opposite sides parallel.
Rectangle – parallelogram with a right angle.
Rhombus – parallelogram with consecutive sides congruent.
Square – all sides congruent and all four right angles.
Trapezoid – quadrilateral with exactly one pair of opposite sides parallel.
Types of the line of the triangle
Types of the line of the triangle
• Midpoint of a segment – a point that divides the segment into
two congruent segments.
• Median – segment from the vertex of a triangle to the midpoint
of the opposite side.
• Altitude – segment from the vertex of a triangle perpendicular
to the line containing the opposite side.
• Midsegment - line segment joining the midpoints of two sides
of a triangle.
• Perpendicular bisector: A line which cuts a line segment into
two equal parts at 90°.
• Angle bisector :A line which cuts an angle into two equal
halves.
Warm-up
• http://quizlet.com/9553277/chapter-6polygons-and-quadrilaterals-vocab-flashcards/
• http://www.artofproblemsolving.com/Forum/
resources.php?c=150&cid=237&year=2010&si
d=40de6d924d0ce22199df0e1799451c0c
What is the name of the line passing through the ……,…….and …….
of the triangle?
(1): center
(2): centroid
(3): orthocenter