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- Properties of Triangles

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Get Started Now- Intro Lesson: a5:24
- Lesson: 1a2:02
- Lesson: 1b1:34
- Lesson: 1c2:19
- Lesson: 1d1:37
- Lesson: 2a4:43
- Lesson: 2b8:10
- Lesson: 2c7:21
- Lesson: 3a2:42
- Lesson: 3b3:31
- Lesson: 3c3:26
- Lesson: 43:40

- Introductiona)Naming types of triangles based on their properties
- By angles
- Acute
- Right
- Obtuse
- By sides
- Scalene
- Isosceles
- Equilateral

- 1.Classify the triangle by its sides and angles.a)

b)

c)

d)

- 2.Draw and classify the triangle by its vertices. Then, determine if it is a right triangle.a)A(3, 6), B(3, 1), C(9, 1)b)A(2, 4), B(5, 10), C(5, -2)c)A(8, 7), B(11, 3), C(4, 2)
- 3.Find x. Then, classify the triangle by its angles.a)

b)

c)

- 4.One angle of a triangular chocolate box is 20°. The measure of the second angle is 3 times smaller than the third one. Find the measures of the two unknown angles.

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