2. Point – a location, has no size, name point by capital letter Line – series of points that extend in opposite directions without end Ray – part of a line with one endpoint and all the points of the line on one side of the endpoint Segment – part of a line with two endpoints and all points in between.

3. Plane – Flat surface that extends indefinitely in all directions and has no thickness Intersecting Lines – have exactly one point in common Parallel Lines – lines in the same plane that never intersect Skew Lines – lie in different planes, they are neither parallel or intersecting

5. Name segments that fit description. 1) parallel to BC 2)intersect BH 3)skew to AG

6. Name segments that fit description. 1) parallel to BC- HD 2)intersect BH – AB, BC 3)skew to AG – BC, HD

7. Angle – figure formed by two rays with a common endpoint Vertex – point of intersection of two sides of an angle or figure

8. Classify angles by their measures:

9. Complementary angles – sum of the measures of two angles is 90° Supplementary angles – sum of the measures of two angles is 180° 1)Find complement of m<G = 79° 2)Find supplement of m<G = 12° 3)Find complement of m<G = 75.1° 4)Find supplement of m<G = 82.2°

10. Complementary angles – sum of the measures of two angles is 90° Supplementary angles – sum of the measures of two angles is 180° 1)Find complement of m<G = 79° 11° 2)Find supplement of m<G = 12° 168° 3)Find complement of m<G = 75.1° 14.9° 4)Find supplement of m<G = 82.2° 97.8°

11. Adjacent angles – share a vertex and a side. They are side by side. Vertical angles – formed by two intersecting lines and are opposite each other Congruent – same size and shape

13. Right angle Obtuse angle Acute angle Straight angleAcute angleRight angle

14. 1) two lines 2)Three segments 3)Pair of congruent angles 1)Four right angles 2)Two pairs of obtuse vertical angles 3)Two pairs of adjacent supplementary angles

15. 1) two lines XU, ST, XP 2)Three segments XN, XP, QN 3)Pair of congruent angles <VXW and <UXP 1)Four right angLes <QNT, <SNQ, <SNY, <YNT 2)Two pairs of obtuse vertical angles <MSW AND <UST ; <SXP AND <VXW 3)Two pairs of adjacent supplementary angles <MSX AND <MSU; <MSX AND <XST

16. Classifying Triangles by Sides:

17. Classifying Triangles by angle measures:

19. Obtuse scalene right isosceles acute isosceles

20. Classifying Triangles by angle measures:

21. isoseles right equilateral obutseacute right

22. Angle Sum of a Triangle: - Sum of the measures of the angles of any triangle is 180° - All angles add up to 180° inside a triangle.

23. Angle Sum of a Triangle: - Sum of the measures of the angles of any triangle is 180° - All angles add up to 180° inside a triangle. 80° 64° 40°

24. Regular polygon – a polygon with all sides congruent and all angles congruent Irregular polygon – a polygon with sides that are not all congruent or angles that are not all congruent

25. Trapezoid – one pair of parallel sides Parallelogram – both pairs of opposite sides parallel Rectangle – 4 right angles Rhombus – 4 congruent sides Square – 4 right angle angles and 4 congruent sides

27. hexagon, regular pentagon, irregular Pentagon, regular parallelogram, irregular quadrilateral, irregular

28. Congruent Polygons – are polygons with the same size and same shape. Name corresponding parts.

29. Congruent Polygons – are polygons with the same size and same shape. Name corresponding parts.

31. QR <RYW<X

33. Not congruent, because corresponding angles and sides are not congruent. Congruent, because corresponding angles and sides are congruent.

34. Circle – set of points in a plane that are all the same distance from a given point. Radius – segment that connects the center of a circle to circle. Chord – segment that has both endpoints on the circle. Diameter – chord that passes through the center of the circle; longest chord Central Angle – angle with a vertex at the center of the circle Arc – part of a circle Semicircle – is half a circle

35. Identify radius, chord, diameter, central angle, and arc.

37. FG, EF<FDG, <GDH FHTriangle FDG Arcs, FG, FGH, GH, HE, GHEFH 90°

38. Circle graph – graph of data in which a circle represents the whole. Total must be = to 100% Finding central angles:

40. 48 75 ° 60 ° 120 ° 105 ° 360° 20.8% 16.7% 33.3% 100% 29.2%

42. sleeping 12.5% About 8 hours