My Geometry Book Line Segment Line Point A

My Geometry Book

Line Segment: Line: Point: -A part of a ___ between __ endpoints -Goes on forever in ____ directions; must have ______ on both ends -An exact position in ____ Find the missing angle in the quadrilaterals below A=90° C= B=90° D=90° A=65° C=115° B= D=115° A=110° C=70° The sum of the angles in any quadrilateral is ______ degrees Angle Relationship B= D=110°

ANGLE RELATIONSHIPS Find the missing angle in the triangles below. A = 60° A= A = 120° B = 60° C= B = 90° B = 30° C = 45° C= The sum of the angles in any triangle is _____ degrees. Ray: Angle: Vertex: -part of a line with __ endpoint that goes on forever in __ ______ -2 rays that ______ an endpoint -the point at which __ line segments, lines, or rays ____ to form an angle Polygon: Regular Polygon: Plane: -a ______ figure formed from line segments that meet only at their ____ -a _______ with all sides the same length & all angles the _____ measure -a flat _______ that extends infinitely in all _____ Basic Geometric Figures

LINES Parallel Lines: Perpendicular Lines: Intersecting Lines: -Lines that will _____ intersect -Lines that _____ at right angles -Lines that “_____” or “____”; think of a street intersection Triangles can also be classified according to the length of their sides. Equilateral Triangle -All 3 sides are _____ -All 3 angles are _____ Isosceles Triangle -____________________ -2 angles, called the base, are congruent Triangles Scalene Triangle -No _____ are congruent

TRIANGLES Triangles can be classified according to their angles Acute Triangle Obtuse Triangle -All 3 ______ are acute (less than 90°) Acute Angles: -measures ________ 90°; think “a little cute angle” -Exactly 1 _____ is an obtuse angle Obtuse Angles: -measures ______ 90° but _______ 180° Right Triangle -Exactly __________________ -the acute angles are complementary Right Angles: -measures ___°; think of a “perfect corner” Lines and Angles Straight Angles: -measures ___°; think of a straight line

QUADRILATERALS A Quadrilateral is a 4 -sided polygon. The sum of the 4 angles of any quadrilateral is 360° Rhombus Square -Consecutive ______ are supplementary -Both pairs of opposite _____ are ____ -All sides are _____ -Both pairs of opposite _____ are congruent Parallelogram -Both pairs of opposite _____ are parallel -Both pairs of opposite sides are _____ -Both pairs of opposite ______ are congruent -Consecutive ______ are supplementary -Both pairs of opposite _____ are parallel -All sides are _____ -All pairs of adjacent _____ are perpendicular -All angles are _____ Rectangle -Both pairs of opposite _____ are parallel -Both pairs of opposite sides are _____ -All pairs of adjacent sides are ______ -All angles are _____ angles Quadrilaterals Trapezoid -Exactly ____ pair of opposite sides is parallel -Exactly two pairs of consecutive ______ are supplementary