Plane Geometry: CE 1997 - How to determine the length of the third side of a Triangle

Plane Geometry: CE 1997 - How to determine the length of the third side of a Triangle

By CE Tips   1:21:00 AM   No comments:

In a triangle BCD, BC = 25 m and CD = 10 m. The perimeter of the triangle may be
a. 69 m
b. 70 m
c. 71 m
d. 72 m


Note:
The sum of the lengths of any two sides of the triangle is greater than the length of the third side.
BC + CD > DB
25 + 10 > DB
35 > DB

The difference of the lengths of any two sides of the triangle is less than the length of the third side.
BC - CD < DB
25 - 10  <  DB
15 < DB

Therefore  15 < DB < 35

a. 69 m
BC + CD + DB = 69
25 + 10 + DB = 69
DB = 34 m (the third side of the triangle)
The perimeter of the triangle is 69 m 


b. 70 m
BC + CD + DB = 70
25 + 10 + DB = 70
DB = 35 m


c. 71 m
BC + CD + DB = 71
25 + 10 + DB = 71
DB = 36 m


d. 72 m
BC + CD + DB = 72
25 + 10 + DB = 72
DB = 37 m

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Analytic Geometry - Study Guide (Georgia End of Course Tests)

Analytic Geometry - Study Guide (Georgia End of Course Tests)

By CE Tips   3:40:00 PM

This study guide is designed to help students prepare to take the Georgia End-of-Course Test (EOCT) for Analytic Geometry. This study guide provides information about the EOCT, tips on how to prepare for it, and some suggested strategies students can use to perform their best.

What is the EOCT? 

The EOCT program was created to improve student achievement through effective instruction and assessment of the material in the state-mandated content standards. The EOCT program helps ensure that all Georgia students have access to rigorous courses that meet high academic expectations. The purpose of the EOCT is to provide diagnostic data that can be used to enhance the effectiveness of schools’ instructional programs.

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Video: Analytic Geometry - Conic Section on Parabola

Video: Analytic Geometry - Conic Section on Parabola

By CE Tips   5:01:00 PM

Lesson on understanding the parabola, and graphing the parabola using its parts: directrix, axis of symmetry, focus, and vertex. Parabolas are represented in the forms of (x-h)^2 = 4p(y+k) if the parabolas are open upwards or downwards, and (y-k)^2 = 4p(x+h) if the parabolas are open to the right or to the left.
-Pedro Thenumberbender

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