Notes Over 9 4 Drawing a Diagram

1
Notes Over 9 - 4
Drawing a Diagram
1. How many diagonals does a decagon have?
Start with an easier diagram and notice any
patterns.
35
A diagonal is a line that can be drawn from one
vertices to another.
2
Notes Over 9 - 4
Drawing a Diagram
2. Jack climbed a set of stairs and stopped at
the middle step. He then walked down 2 steps, up
4 steps, down 3 steps, and up 6 steps, and he was
at the top of the stairs. How many steps are in
the set of stairs?
5
4
3
2
1
1
2
middle
3
4
5
11 stairs
Start at the middle and draw a picture.
3
Pg 462 9 4 1 3, 4 15
Solve by drawing a diagram.
1. A furniture delivery truck leaves the store
at 8 A.M. It travels 6 miles east, then 4 miles
south, then 2 miles west, and then 4 miles north.
At the end of the route, how far is the truck
from the store?
6 miles
4 miles
4 miles
4 miles to the east of the store
2 miles
4
Pg 462 9 4 1 3, 4 15
Solve by drawing a diagram.
2. Bill is older than Jim and younger than Jose.
Jose is older than Chris and younger than
Tandala. Chris is older than Jim. Bill is younger
than Tandala. Chris is older than Bill. Who is
youngest?
oldest
youngest
5
Pg 462 9 4 1 3, 4 15
Solve by drawing a diagram.
2. Bill is older than Jim and younger than Jose.
Jose is older than Chris and younger than
Tandala. Chris is older than Jim. Bill is younger
than Tandala. Chris is older than Bill. Who is
youngest?
oldest
youngest
6
Pg 462 9 4 1 3, 4 15
Solve by drawing a diagram.
2. Bill is older than Jim and younger than Jose.
Jose is older than Chris and younger than
Tandala. Chris is older than Jim. Bill is younger
than Tandala. Chris is older than Bill. Who is
youngest?
oldest
youngest
7
Pg 462 9 4 1 3, 4 15
Solve by drawing a diagram.
2. Bill is older than Jim and younger than Jose.
Jose is older than Chris and younger than
Tandala. Chris is older than Jim. Bill is younger
than Tandala. Chris is older than Bill. Who is
youngest?
Jim
oldest
youngest
8
Pg 462 9 4 1 3, 4 15
Solve by drawing a diagram.
3. Geometry How many triangles can you form in
a hexagon if you draw all the diagonals from only
one vertex?
4 triangles
9
Pg 462 9 4 1 3, 4 15