Bellwork!!

Aaron mixes 2 ounces of oil to each gallon of gas. Which proportion could be used to determine the amount of oil “a” needed for 2.5 gallons of gas? (DOK 3)

  I. II. III.

a) I and IIb) II and III c) I and IIId) I, II, and III

2

1 2.5

a 2 2

1 5

a

2 1

2.5a

And now it’s time for…….

Timed Skill Drill….. Homework Review…

TSD H.R.

Congruent FiguresBy: Mrs. YowPre-Algebra

obj. 3c

What are Congruent Figures?

Congruent figures.... Are figures that have the exact same shape AND size!

Why learn about Congruent Figures?

Let’s see…

You see congruency in Architecture!

World Trade Center

Congruency in Architecture!

Petronas Twin Towers (Malaysia’s version)

Congruency in Architecture!

Portland, Maine Convention Center and Hotel

The US Department of Treasury must use congruency when it makes money!

Manufacturers use congruency when making their products!

MOTORAZR V3

Assembly Line Packaging

Toy Makers

Symbol for CongruenceIf two polygons are congruent,

then their corresponding or matching sides and angles are

also congruent.

These triangles are congruent

Name the corresponding parts

___

___

___

A

B

C

___

___

___

AB

BC

AC

____ABC

Make 6 more congruence statements

FUN KID Given:

Answer the following for PRI BJH. Sketch a figure if needed.IPR ______ R _____ _____H _____

If I = 70 and B = 50, then J = _____If RI = 8 cm, BJ = 6 cm, BH = 7 cm, then PR

= _____

RP

The sum of the angles of a quadrilateral is 360.

quadrilateral BRAV quadrilateral METSquadrilateral AVBR quadrilateral _______If V = 62, then ___ = 62.If RA = 7 cm, then ____ = 7 cm.If E = 100, then ___ = 100.If MS = 11 cm, then ____ = 11 cm.Using the measures of V and E given

above, if T = 110 then B = ____.

In closing…..

Make a congruence statement and list all congruent parts.