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Published byNicholas Cruz Modified over 3 years ago

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**Target Mindy scored exactly 100 on this dart board.**

How many darts did she throw, and where did they land?

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**Target Answer Mindy shot 6 darts.**

She hit the 16, 2 times and hit the 17, 4 times. 16 x 2 = 32 17 x 4 = 68 = 100

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Triangles Lesson 10-4

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Triangle A triangle is a figure that has 3 sides and 3 angles. The sum of the measure of the angles is 180° m<1 + m<2 + m<3 = 180° 1 2 3

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**Find the missing angle measure**

<1 = 50° <2= 75° <3 = ?

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**Find the missing angle measure**

<1 = 50° <2= 75° <3 = ? = 125 180 – 125 = 55°

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**Classify Triangles Using Angles**

Acute Triangle Properties: All acute angles.

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**Classify Triangles Using Angles**

Right Triangle Properties: 1 right angle.

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**Classify Triangles Using Angles**

Obtuse Triangle Properties: 1 obtuse angle.

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**Classify Triangles Using Sides**

Scalene Triangle Properties: No congruent sides.

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**Classify Triangles Using Sides**

Isosceles Triangle Properties: At least 2 congruent sides. This symbol represents that the sides are congruent.

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**Classify Triangles Using Sides**

Equilateral Triangle Properties: 3 congruent sides.

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**Naming Triangles Triangles have a 2 part name.**

The first part of the name, names the angles (acute, obtuse, or right) The second part of the name, names the sides (scalene, isosceles, or equilateral) Example: Obtuse Scalene

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Name the Triangle Acute Scalene

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Name the Triangle Right Scalene

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Name the Triangle Acute Equilateral

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**Find the missing angle. Then classify the triangle as acute, right, or obtuse.**

x 40°

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**Find the missing angle. Then classify the triangle as acute, right, or obtuse.**

20° 25° x

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**Find the missing angle. Then classify the triangle as acute, right, or obtuse.**

30° x 130°

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Don’t Forget Homework: Lesson # 1-18 all

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