Summer has completely gotten away from me, between the younger girls' continual cycle of church camps and Vacation Bible Schools (this w.
Sal proves that the base angles in isosceles triangles are congruent, and conversely, that triangles with congruent base angles are isosceles. He also proves that the perpendicular to the base of an isosceles triangle bisects it.
Geometry POSTERS Circles Quadrilaterals Triangles Kid Friendly CUTE- Geometry is very visual so these posters are a perfect visual reminder for students of geometric terms such as Diameter, Radius, Parallelogram, Rho.
This is a collection of math and reading bookmarks plus classroom library and organization labels. Math bookmarks include:16 Geometric Math Bookmarks covering the following terms:circles, squares, triangles, rectanglespentagons, hexagons, heptagons, octagonscylinders, cubes, polygons, quadrilateralsline segment, ray, lineright triangle, isosceles triangle, scalene triangleintersecting lines, parallel lines, perpendicular linesacute angle, obtuse angle, right angledefinition…
This geometry lesson covers the Pythagorean Theorem and its converse. It includes notes, practice, a quiz and a lesson plan. This lesson is preparing students to recognize when to use Pythagorean Theorem. Students will practice using real-life problems, rectangles, right triangles and isosceles triangles.
Applet leads students to informally discover two properties (in this case, theorems that CAN be proven formally afterwards): 1) If two sides of a triangle are congruent, then the angles opposite those sides are congruent. 2) The bisector of the vertex angle of an isosceles triangle is the perpendicular bisector of the base.