Access Point #: MA.912.G.4.In.b (Archived Access Point)


This document was generated on CPALMS - www.cpalms.org



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.

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.

Related Benchmarks

Name Description
MA.912.G.4.2: Define, identify, and construct altitudes, medians, angle bisectors, perpendicular bisectors,orthocenter, centroid, incenter, and circumcenter.
MA.912.G.4.5: Apply theorems involving segments divided proportionally.



Related Courses

Name Description
1206300: Informal Geometry
1206310: Geometry
1206320: Geometry Honors
1206315: Geometry for Credit Recovery


Related Resources

Image/Photograph

Name Description
Clipart: Geometric Shapes:

In this lesson, you will find clip art and various illustrations of polygons, circles, ellipses, star polygons, and inscribed shapes.



Parent Resources

Image/Photograph

Name Description
Clipart: Geometric Shapes:

In this lesson, you will find clip art and various illustrations of polygons, circles, ellipses, star polygons, and inscribed shapes.