Wednesday Feb 24, 2016

Take out your notebook for today's warm - up

LT5.1: I can compose and decompose polygons.

BYD#2 - Factoring Trinomials - due MON Feb 29

Warm - up

Warm - up 2 / 24 / 16

1.

2.

Eleven players ona soccer team high five each other.How many high fives are there altogether?

Sketch and label two triangles both with an area of 21 cm2

1. Eleven players ona soccer team high five each other.How many high fives are there altogether?

2. Sketch and label two triangles both with an area of 21 cm2

BYD #2 - due MON Feb 29

Notes

3 - sides Triangle

4 - sides Quadrilateral

5 - sides Pentagon

6 - sides Hexagon

7 - sides Heptagon (Septagon)

8 - sides Octagon

9 - sides Nonagon

10 - sides Decagon

12 - sides Dodecagon

These namesyou shouldmemorize

Octopus has8 legs

Heptathalonhas 7 events

Pentathalonhas 5 events

A decade has10 years

for a regular hexagon for a regular heptagon

6 sides - 4 triangles 7 sides - 5 triangles

8 sides - 6 triangles 9 sides - 5 triangles9 sides - 7 triangles

10 sides - 8 triangles

nth ?

n = number of sides (n-2) = number of triangles

Lesson

Think about theproblem on yourown (no talking)

Discuss with(only) your partner(s)

Share withthe class

If a polygonhad 16 sides, How much wouldall the angles add up to?

If it is a regularpolygon, thenwhat is the measureof each angle?

If the sum off all the angles ofa polygon = 18000

How many sides does the polygon have?