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Course: High school math (India)?>?Unit 1
Lesson 10: Triangles- Angles in a triangle sum to 180° proof
- Triangle exterior angle example
- Angle sum property of a triangle
- Triangle inequality theorem
- Triangle inequality
- Triangle congruence postulates/criteria
- Congruent triangles
- Area of a triangle
- Area of a triangle
- Intro to the Pythagorean theorem
- Pythagoras theorem
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Area of a triangle
Problem
Look at the image below.
What is the area of the triangle?