TRIANGLES
por Ngoc Trinh Tran
![Mind Map: TRIANGLES](https://www.mindmeister.com/image/xlarge/512618718/mind-map-triangles.png)
1. Inscribed Triangles
2. Circumscribed Triangles
3. Properties of Triangles
3.1. Having 3 sides & 3 angles
3.2. All triangles are convex
3.3. 3 interior angles add to 180°
3.4. Measure of an exterior angle equals the sum of the measures of the two non-adjacent interior angles
3.5. The acute angles of a right triangle are complementary
4. Triangles Congruence Conditions
4.1. SSS
4.2. SAS, ASA, AAS
4.3. RHL
5. Definition
5.1. Task
5.2. Prerequisites
6. How to Identify A Triangle
6.1. Types of Triangles
6.1.1. Classify by Sides
6.1.2. Classify by Angles
6.2. Measure a Triangle
6.2.1. Perimeter
6.2.2. Area