Download CW#05 CW#05

CW#05
Day / Date
Due Now
Warm­Up
Classwork Due: EOP
Homework Due: 2/15
Learning Target
News and Notes
February 13, 2017
Monday, February 13
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CW#5: 7.2, p. 441 A#5: p. 444: #1 – 6, 8, 10, 12, 16, 18, 20 Use the Pythagorean Theorem to Determine if a Triangle is a Right Triangle and to Classify Triangles as Acute, Obtuse, or Right
7.1 ­ 7.4 Quiz 2/22 1
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Geometry Questions 7.2
1. What is the converse of the Pythagorean Theorem? How can you use it to determine if a triangle is a right triangle?
Is it a right triangle or not?
1.
2.
3.
4.
Substitute side lengths into a2 + b2 = c2.
Make sure that the longest side is c.
Square each piece first, then add.
True = Right Triangle, False = Not
Example. Determine if the triangle is a
right triangle.
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Practice. Determine if the triangle with the
given side lengths is a right triangle.
**lengths are usually least to greatest**
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2. How can we use the Pythagorean Theorem to determine if triangles are acute or obtuse?
1. Identify a, b, and c with c largest.
2. Substitute into c2 ? a2 + b2
3. If c2 =, right
c2 <, acute
c2 >, obtuse
Example. Classify the triangle by angles.
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Practice.
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3. What are the three classifications for triangles that we can find using the Pythagorean Theorem?
Acute, Right, or Obtuse.
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A#5: p. 444: #1 – 6, 8, 10, 12, 16, 18, 20
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Quiz #5
1. What is the converse of the PT?
2. How can we classify triangles using the PT?
3. Classify each of the following triangles by angles.
a. 10, 12, 14
b.
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Attachments
GraphPaper20x20AxesUnits.bmp