Math-7 NOTES DATE: ______/_______/_______ What: Quadrilaterals Why: To introduce basic geometry vocabulary and focus on quadrilateral relationships. What: Quadrilaterals Why: To introduce basic geometry vocabulary and focus on quadrilateral relationships. NAME: Congruent – objects that are the __________ size and shape. Line — goes ________________ in both directions. ( ⟷ ) Ray — goes forever in _________ direction. ( ⟶ ) Line Segment – has both a beginning and an _______. ( ) Parallel Lines – two or more lines that will never ________________. ( I I ) Perpendicular – two line segments/ lines that meet in such a way that ___________ angles are formed. ( ┴ ) Vertex — __________ where two line segments meet. Angle — formed when two _________ come together at the same vertex Acute Angle — measures ________ than ______. Obtuse Angle –measures ________ than ______. Right Angle – measures exactly ______. Polygon — simple, closed figure formed by _____ or more line ________________. Polygons are NOT __________. Triangle — _____ sides. Quadrilateral — _____ sides. Pentagon — _____ sides. Hexagon — _____ sides. Heptagon — _____ sides. Octagon — _____ sides. Nonagon — _____ sides. Decagon — _____ sides. Essential Vocabulary Adjacent Sides — two sides of a polygon that share the same ___________ (side-by-side). Opposite Sides — sides that are directly ________________ from one another.

Vocabulary: Quadrilateral– closed figure with ______ sides and ________ angles. Trapezoid– has one pair of ____________ sides. Parallelogram– opposite sides ___________ and opposite sides ____________. Rectangle– parallelogram with 4 __________ angles. Square– parallelogram with 4 right angles and 4 ______________ sides. Rhombus– parallelogram with 4 congruent ___________. There is a total of ___________ degrees in every quadrilateral! HOW ARE THEY RELATED?

True or False (correct “False” answers in order to make them “True”): 1)_____ Every square is also a rhombus. 2)_____ Every rhombus is also a square. 3)_____ Every rectangle is a parallelogram. 4)_____ Parallelograms have opposite sides that are perpendicular. 5)_____ A square is a special type of trapezoid. 6)_____ Not all rectangles are squares. 7)_____ It is impossible for a square to also be a rectangle. 8)_____ A trapezoid is a parallelogram. 9)_____ Every trapezoid is also a quadrilateral. 10)_____ A quadrilateral can have more than four angles. 11)_____ The trapezoid is the only quadrilateral that is NOT a parallelogram. 12) _____ SpongeBob has square pants. Examples of “Congruency” and “Parallel” Notation: Matching tick marks mean those sides are _________________. Matching arrow marks mean those sides are _________________.

DATE: ______/_______/_______ NAME:___________________________________