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# Geometry OTQ - PowerPoint PPT Presentation

Geometry OTQ. Are you ready for this chapter? pg. 235 1 – 3, 5, and 6. Homework Questions?. What will I be able to do?. Identify and classify triangles by angles and sides. What standard will I learn?. 12.0 Students find/use measures of sides/angles

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Presentation Transcript

Are you ready for this chapter?

pg. 235

1 – 3, 5, and 6

Identify and classify triangles by angles and sides

What standard will I learn?

12.0 Students find/use measures of sides/angles

of triangles

### 4.1 Triangles and Angles

(all  s)

Acute

(3 acute s)

Right

(1 right )

Obtuse

(1 obtuse )

Equilateral

(3  sides)

Isosceles

(2  sides)

Scalene

(0  sides)

Classifying Δs (angles vs sides)

40

80

60

120

RIGHT TRIANGLE!!!!

Example 1: bridge have?

Classify each triangle by its angles and sides.

1. MNQ

2.NQP

3. MNP

acute; equilateral

obtuse; scalene

acute; scalene

Example 2: bridge have?

Classify the triangle by the description given:

A) Side lengths: 3 in, 5 in, 3 in

Isosceles

B) Side lengths: 3 ft, 5 ft, 4 ft

Scalene

C) Angle measures: 60°, 90°, 30°

right

D) Angles measures: 10°, 160°, 10°

obtuse

Pencils Down! bridge have?

Complete the sentence with always, sometimes, or never.

• A scalene is ________ an equilateral .

• A right ________ has an angle of 90°.

• An isosceles triangle is __________ an

equilateral .

never

always

sometimes

SUMMARY bridge have?

CLASSWORK bridge have?

Pages 241 – 242 #’s 22 – 36 even,

40 – 46 even

Homework is on the next slide

HOMEWORK bridge have?

Page 244 #’s 74 – 80 even