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 . 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-6-polygons-and-quadrilaterals-vocab-flash-cards/ http://www.artofproblemsolving.com/Forum/resources.php?c=150&cid=237&year=2010&sid=40de6d924d0ce22199df0e1799451c0c

What is the name of the line passing through the ……,……. and …… What is the name of the line passing through the ……,…….and ……. of the triangle? (1): center (2): centroid (3): orthocenter