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# Monthly Archives: April 2007

## ASCII test

`x^2` Solving the quadratic equation. Suppose `ax^2+bx+c=0` and `a!=0`. We first divide by `a` to get `x^2+b/ax+c/a=0`. Then we complete the square and obtain `x^2+b/ax+(b/(2a))^2-(b/(2a))^2+c/a=0`. The first three terms factor to give `(x+b/(2a))^2=(b^2)/(4a^2)-c/a`. Now we take square roots on both … Continue reading

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## Day 150

Pre-Algebra: Chapter 11 TEST There IS Homework for today. In preparation for the CST, it is the Cumulative Review from Chapters 1 to 6, the EVEN problems. Algebra: CST Review Today we begin the review for the CST. We are … Continue reading

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## Day 149

Thank you to all parents, students and family friends who attended last night’s OPEN HOUSE. I enjoyed meeting all your families! Pre-Algebra: Chapter 11 Review Today we are working on the ODD problems and will have an opportunity to go … Continue reading

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## Day 148

Pre-Algebra: Chapter 11 Review We are working on the Chapter Review, pages 602-604 to be ready for a test on MONDAY! Algebra: Chapter 13-7 Using Quadratic Equations Word problems need to be thought out before starting. Draw pictures and understand … Continue reading

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## Day 147

Pre-Algebra: Chapter 11-9 Transformations There are 3 types of transformations: A translation is a “sliding” a figure horizontally, vertically or diagonally A rotation is turning a figure about a point A reflection is “flipping” a figure over a line When … Continue reading

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## Day 146

Pre-Algebra: Chapter 11-8 Polygons Polygons are simple, closed sided figures (in a plane) that are formed with at least 3 line segments. The points of intersection are called the vertices (the plural of vertex). A diagonal is a line segment … Continue reading

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## Day 145

Pre-Algebra: Chapter 11-7 Quadrilaterals Quadrilaterals are 4 sides figures, their total inside angles add up to 360°. Quadrilaterals are 4 sided figures. There are 3 types of quadrilaterals Quadrilaterals:have no pairs of parallel lines Parallelograms: have 2 pairs of parallel … Continue reading

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## Day 144

Pre-Algebra: Chapter 11-6 Similar Triangles If 2 triangles are similar, then the corresponding angles are congruent. If 2 triangles are similar, them their corresponding sides are proportional. Similar triangles have the SAME SHAPE but not necessarily the SAME SIZE are … Continue reading

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## Day 143

Pre-Algebra: Chapter 11-5 Congruent Triangles Congruent triangles are triangles that have equal sides and equal angles. The parts are called the “corresponding parts”. A fancy definition “If 2 triangles are congruent, their corresponding sides are congruent and their corresponding angles … Continue reading

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## Day 142

Pre-Algebra: Chapter 11-4 Triangles Triangles can be classified by their angles or their sides or both. Every angle has 2 acute angles and the 3rd angle can be used to classify the triangle. Triangles always have 180°! Acute: has 3 … Continue reading

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