Geometry Thursday 3-5-15• Warm-Ups

• Pythagorean Theorem review problems• Check in and discuss A#7.2 pg 354 #12-35

• Discussion/Notes/Guided Practice• Section 7.3: Special Right Triangles

• Assignment• A#7.3 Worksheet

Monday we learned...• Why the Pythagorean Theorem is true• How to use the Pythagorean Theorem and its Converse to

solve triangle problems• How to identify if 3 side lengths of a triangle are

considered a Pythagorean Triple• How to determine if 3 side lengths form a right triangleToday we are learning to ...• Identify and use properties of the special 30-60-90 and

45-45-90 trianglesWe will show that we can do this by... • Asking and answering questions• Finding triangle side lengths given either a 30-60-90 or

45-45-90 triangle (7.3 Worksheet)To know how well we are learning this we will look for...• Correct side lengths (or answers)It is important for us to learn this (or be able to do this) because.... Solving triangles can help determine heights or distances of objects in real life. Using these properties are “short-cuts” and will save time when solving triangles. Tomorrow we will learn about...Applying what we’ve learned about the Pythagorean Theorem, its converse, and special triangle properties.

Today: 4:00-6:30 cafeteria Parent-Teacher Conferences

Monday 3/9/15 Quiz: 7.2/7.3

Warm-ups: 1. Take out A#7.2 page 354 #12-35 and put on your desk for check-in.2. Complete this slide during check in.

7-3 Special Right Triangles

• 45°-45°-90°

45°-45°-90° Triangle Theorem

Example #1: Find side lengths of a 45-45-90 triangle• Find x and y Your turn…

• Find x and y

Example #2Find side lengths of a 45-45-90 triangle• Find x and y

Your turn…• Find x and y

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Properties of 30°-60°-90° Triangle

30°-60°-90° Triangle Theorem

Example #3Find side lengths of a 30-60-90 triangle• Find x and y

Your turn…• Find x and y

Example #4Find side lengths of a 30-60-90 triangle

• If c = 8, find a and b.

7.3 Worksheet