3/11 Bell Ringer

1
3/11 Bell Ringer

• Use the Pythagorean Theorem to find c (round
  to the nearest hundredth)

Homework Finish Independent Practice on
45-45-90 Triangles
Grab a calculator, vocabulary sheet, and todays
guided notes.
2
3/11 Agenda

• I CAN apply knowledge of right triangles to
  discover the relationship among the sides of
  45-45-90 triangles.
• 1. Bell Ringer
• 2. Inquiry into a new relationship
• 3. Guided Practice
• 4. Independent Practice
• 5. ACT Question of the Day

3
News and Notes

• Perfection Award 9th Period
• Service Learning Meeting TODAY, 330 PM in ROOM
  215.
• If you cant make it write down your name,
  phone number, e-mail address, and what days of
  the week you can stay after school to work.

4
THIS IS A DISCOVERY

• You are going to apply your prior knowledge of
  the Pythagorean Theorem to discover a
  relationship among 45-45-90 triangles.
• You will have to think very hard at times. You
  cannot give up! Remember what we talked about
  yesterday, its time to step it up!

5

• 1 2
• Refer to the questions on your guided notes and
  answer those questions to lead yourself to define
  a new relationship!

6
C
1
6
C
1
6
Our Rule

• In a 45-45-90 triangle the following relationship
  holds
• Hypotenuse Leg x v2
• AND
• Leg Hypotenuse v2

7
Vocabulary
WORD DEFINITION EXAMPLE
45-45-90 Triangle The legs are congruent and H Lv2. YOU FILL THIS IN. WE WILL NOT MOVE ON UNTIL EVERYONE HAS AN EXAMPLE DRAWN!
8
Agile Mind

• Now go through the example problems in Agile Mind
  Topic 16 (Right Triangle and Trig Relationships)
  EXPLORING SPECIAL RIGHT TRIANGLES PP 2 5.
• Everyone needs a piece of paper and fold it into
  4 sections.

9
ACT Question of the Day

• The value of c is

A. 7 B. 7/v2 C. 7v2 D. 7v3
Homework Finish Independent Practice on
45-45-90 Triangles
SERVICE LEARNING TODAY AT 330pm in ROOM 215