9-2 Areas of Quadrilaterals

Area of parallelogram = Base X Height

Base can be the length of any of the four sides.
Height is the perpendicular distance (the distance that forms a right angle with the chosen base) from the base to the opposite side.

Area of trapezoid = (b1+b2)H / 2; length of base 1 plus length of base 2 multiplied by the height and then divided by 2.

The bases of the trapezoid are the parallel sides. The height is the perpendicular distance between the bases.

9-1 Areas of Rectangles and Triangles

Area of Rectangle = length x width

The length and width of the rectangle can be either measurement...

Area of Triangle = base x height / 2

The area of trianlge is 1/2 the area of the rectangle that contains it!

A hectare = 10,000 square meters

Please draw a picture for EVERY problem!
Please write a formula for EVERY problem!

Chapter 6 Test Return!

chapter 6 test returned in class today - your score is out of a possible 70 points!

Please complete corrections for all the problems the you got wrong on a separate piece of paper, staple it to the back of your test, and turn in at the beginning of class tomorrow.

If you finish in class, you may work on Sudoku...

Chapter 6 Test

I hope you did well on your test today!

Puzzling Friday tomorrow!

6-9 Congruent Poygons

Polygons that have the same side lengths and the same angle measures.

3 motions include: TRANSLATION - ROTATION - REFLECTION

Triangles can be proven congruent based on:

SIDE - ANGLE - SIDE

ANGLE - SIDE - ANGLE

SIDE - SIDE - SIDE

Please review Chapter 6 concepts...our Chapter 6 test will be on Thursday!

6-8 Polygons and Their Perimeters

POLYGON is a closed figure consisting of line segments joined at their endpoints.

The points are VERTICES and the segments are SIDES.

PENTAGON - 5 sides, HEXAGON - 6 sides, OCTAGON - 8 sides, DECAGON - 10 sides

PERIMETER of a polygon is the sum of the lengths of the sides.

If all sides and all angles of a polygon are CONGRUENT, the polygon in called REGULAR

Points, Lines, and Rays Packet

Please complete the 4 page packet for class tomorrow!( Friday Jan 23)

Please make sure that you have spelled everything correctly.

You do not have to MEASURE any of the angles despite the instructions.

This material will make up one third of next week's test on Chapter 6 so please make sure that you understand everything. If not, come see me in the morning!