1. The world has no point without geometry.
Quick Review
The world has no point without geometry.

2. Question
This is a ______ Polygon

3. Group Definitions
Equilateral Polygons
Equiangular Polygons

4. Group Definitions
Angle Bisectors
45°
20° B A C D E F G H
Not Angle Bisectors
So outta curiosity if this whole angle is 54°, how big is this one? How do you write stuff here? B E

5. Group Definitions Notice it’s LINEar angles. Gotta be a line in there.
Not Linear Angles
40°
140°
80°
100°
Notice it’s LINEar angles. Gotta be a line in there.

6. 120°
60° B E l m
Group Definitions
Supplementary Angles
Not Supplementary Angles
Talk briefly about parallel lines here and how to write ‘em. B E H G

7. Group Definitions B E 30° 60° H G B E Complementary Angles
Not Complementary Angles H G B E

8. Group Definitions C A D F
Vertical Angles
Not Vertical Angles B E H G

9. Group Definitions
91° C B A
Obtuse Angles
Not Obtuse Angles

10. 88° C B A
Group Definitions
Acute Angles
Not Acute Angles

11. Group Definitions Alright, we’re gonna define eight terms.
90° C B A
Group Definitions
Right Angles
Not Right Angles
Alright, we’re gonna define eight terms.
Show how we can write m(angle)B = 90° and AB (perp symbol) BC

12. Group Notes Have them fold their notepaper into sixths. Right triangle
Obtuse triangle
Acute triangle
Scalene triangle
Isosceles triangle
Equilateral triangle
Have them fold their notepaper into sixths.

13. Basketball a b c
5) Spell that shape!
s -
c -
a -
l -
e -
n - e

14. 8. Basketball a b c 6) Spell that shape! i - s - o - s - c - e - l -
7) Name this angle A B C
Angle BAC

15. 8. Basketball
8) AD is the bisector of BAC. What is the measure of BAD? D
110° B
55° C A
9) Name that shape!
quadrilateral

16. B is the midpoint of AC.
Find the length of AC.
1) AB = 6X and BC = 3X + 15

17. Fill in the blanks A line has ____ endpoints and _____ midpoints
Fill in the blanks A line has ____ endpoints and _____ midpoints. A segment has ____ endpoints and _____ midpoints. A ray has ____ endpoints.

18. Find x
2x + 4 6x

19. Find x
3x + 9
12x

20. Find the missing angle 28 ? 65

21. Which of the following would make a triangle?
3, 7, 10
532, 271, 262
1/2, 3/2, 2