Classifying Triangles Reference pages p.484-488 E.Q How do you classify triangles and find the interior and exterior angle measures? - PowerPoint PPT Presentation

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Classifying Triangles Reference pages p.484-488 E.Q How do you classify triangles and find the interior and exterior angle measures?

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Classifying Triangles Reference pages p.484-488 E.Q How do you classify triangles and find the interior and exterior angle measures? Page 486 Textbook Angle Measures ... – PowerPoint PPT presentation

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Title: Classifying Triangles Reference pages p.484-488 E.Q How do you classify triangles and find the interior and exterior angle measures?

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(No Transcript)
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Classifying TrianglesReference pages p.484-488
E.Q How do you classify triangles and find the
interior and exterior angle measures?
3
Angles Sides
Acute Equilateral
Right Isosceles
Obtuse Scalene
4
• Page 486 Textbook

5
Angle Measures-No picture
• 25º, 125º, 30º
• 30º, 60º, 90º
• 47º, 56º, 77º

6
Side Measures-No picture
• 8m, 11m, 8m
• 5cm, 5cm, 5cm
• 7 in, 9 in, 13in

7
All triangles have an angle sum of.
60
60
60
8
X
70
50
9
120
T
30
10
Mental Meltdown
• Find the missing angle
• 30, 60, ?
• 60, 80, ?
• 90, 19, ?
• 47, 99, ?
• 50.3, 60.9, ?
• 62 1/3, 74 3/8, ?
• Demonstrate an obtuse angle.

11
Supplementary Angles
• Supplementary angles are adjacent angles that
_______.
• If we know the measure of one angle in a
supplementary angle pair, then we can find the
angle of the other.

x
75
12
42
55
x
80
13
y
100
45
35
14
42
x
y
48
15
3-2-1
• 3 ways to classify a triangle by angles,
• 2 ways to classify a triangle by sides,
• and 1 way to determine a missing interior angle.