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Identify the height (altitude) in equilateral and isosceles triangles using physical and visual models.
Clarifications:
Limit to regular triangles where altitude divides triangle in equal parts (angle bisector).
Student identifies altitude by folding a paper model triangle, drawing bisecting lines, or using a template.
General Information
Number: MA.912.G.4.In.b
Category: Independent
Date Adopted or Revised:
09/07
Standard:
Triangles : Identify and describe various kinds of triangles (right, acute, scalene, isosceles, etc.). Define and construct altitudes, medians, and bisectors, and triangles congruent to given triangles. Prove that triangles are congruent or similar and use properties of these triangles to solve problems involving lengths and areas. Relate geometry to algebra by using coordinate geometry to determine regularity, congruence, and similarity. Understand and apply the inequality theorems of triangles.
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Image/Photograph
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1 Image/Photograph
Clipart: Geometric Shapes:
In this lesson, you will find clip art and various illustrations of polygons, circles, ellipses, star polygons, and inscribed shapes.
Type: Image/Photograph
