1. Top of book—front of yellow pageMy
Geometry
Book

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

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

4. LINES
Parallel Lines:
-Lines that will _____ intersect
Perpendicular Lines:
-Lines that _________ at right angles
Intersecting Lines:
-Lines that “_____” or “____”; think of a street intersection
Back of orange page
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
Scalene Triangle
-No _____ are congruent
Triangles

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

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