Answer:
See below
Step-by-step explanation:
Intersection of a regular octagon and a line segment can result in:
- Triangle (ABC as example)
- Quadrilateral (ABCD as example)
- Pentagon (ABCDE as example)
- Hexagon (ABCDEF as example)
- Heptagon (ABCDEFG as example)
Refer to attached
Step-by-step explanation:

Step-by-step explanation:

PEMDAS
do parentheses first
4 x 10=40
40 x 10=400
Answer:
x = 20
Step-by-step explanation:
The 3 arcs UV, VW, WX form a semicircle, so sum to 180° , that is
4x + 2 + x + 78 = 180
5x + 80 = 180 ( subtract 80 from both sides )
5x = 100 ( divide both sides by 5 )
x = 20