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# Derivation of the Triangle Area Formula

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Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
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## Derivation of the Triangle Area Formula

Determine an alternate formula for a triangle's area

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## Area of a Triangle

This lesson covers how to find the area of a triangle using sine.

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## Area of a Triangle

This lesson covers how to find the area of a triangle using sine.

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## Area of a Triangle

This lesson covers how to find the area of a triangle using sine.

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• PLIX

## Derivation of the Triangle Area Formula

Derivation of the Triangle Area Formula Interactive

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• PLIX

## Derivation of the Triangle Area Formula: Bake Sale

Derivation of the Triangle Area Formula Interactive

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• Video

## Finding the Area of an Oblique Triangle using the Law of Sines - Overview

by CK-12 //basic

Overview

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• Video

## Example: Determine the Area of a Triangle Using the Sine Function

Shows an example of determining the area of a triangle by using the sine function.

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• Video

## Finding the Area of an Oblique Triangle using the Law of Sines - Example 1

by CK-12 //basic

Find the area of an oblique triangle given one angle and two sides

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• Video

## Finding the Area of an Oblique Triangle using the Law of Sines - Example 2

by CK-12 //basic

Word Problems - Find the distance

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• Practice
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## Area of a Triangle Quickwrite (PreRead)

To activate prior knowledge, make personal connections, reflect on key concepts, encourage critical thinking, and assess student knowledge on the topic prior to reading using a Quickwrite.

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## Area of a Triangle Four Square Concept Matrix

by CK-12 //

To stress understanding of a concept by summarizing the main idea and applying that understanding to create visual aids and generate questions and comments using a Concept Matrix.

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• Study Guide

## Triangle Formulas

by Rayna Schlossberg //basic

Determine an alternate formula for the area of a triangle, find the area of a triangle when three sides are known, and find unknown triangle quantities when given area.

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• Flashcards

## Area of a Triangle

by Kyle Bardman //basic

These flashcards will help you better understand Algebra II with Trigonometry Concepts.

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