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CP - Lesson: Triangle Angle Measures (part 1)

CP - Lesson: Triangle Angle Measures (part 1)

Assessment

Presentation

Mathematics

9th Grade

Medium

CCSS
8.G.A.5, HSA.CED.A.3, 4.G.A.2

+1

Standards-aligned

Created by

Christopher Gassler

Used 14+ times

FREE Resource

5 Slides • 7 Questions

1

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2

Triangle Angle Measure (part 1)

OBJECTIVE: Find the missing angle in a given triangle

3

Multiple Select

Question image

Classify the triangle.

1

Acute

2

Right

3

Obtuse

4

Scalene

5

Isosceles

4

Triangles

There are 3 angles in a triangle.


When you add all 3 angles together they ALWAYS equal 180°


31° + 105° + 44° = 180°

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5

Math Response

What is the measure of the missing angle?
Type answer here
Deg°
Rad

6

Isosceles Triangles FACTS


1) Two sides are equal


AND


2) The BASE ANGLES are equal

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7

EXAMPLE

Given the triangle:

What is the measure of ∠C?

What is the measure of ∠B?

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8

Multiple Select

Question image

Given the triangle, find the missing measures.

(picture is not to scale)

1

∠B = 67°

2

∠A = 46°

3

∠A = 67°

4

∠B = 46°

5

∠A = 95°

9

Multiple Select

Question image

Given the triangle, find the missing measures.

(picture is not to scale)

1

∠B = 82°

2

∠A = 16°

3

∠A = 82°

4

∠B = 16°

5

∠A = 22°

10

EXAMPLE

Given the triangle:

What is the measure of ∠C?

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11

Multiple Choice

Question image

Given the triangle, find the m∠B.

(picture is not to scale)

1

74°

2

148°

3

64°

4

16°

5

180°

12

Multiple Choice

Question image

Given the triangle, find the m∠A.

(picture is not to scale)

1

78°

2

156°

3

48°

4

24°

5

180°

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