# GeometryThursday 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.

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GeometryThursday 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 triangle Today we are learning to... Identify and use properties of the special 30-60-90 and 45-45-90 triangles We 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 #2 Find side lengths of a 45-45-90 triangle Find x and y Your turn… Find x and y 32

Properties of 30°-60°-90° Triangle

30°-60°-90° Triangle Theorem

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

Example #4 Find side lengths of a 30-60-90 triangle If c = 8, find a and b.

7.3 Worksheet

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