5 1 classifying triangles
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There are 7 types of triangles classified by their sides and angles: equilateral triangles have 3 congruent sides; isosceles triangles have 2 congruent sides; scalene triangles have no congruent sides; equiangular triangles have 3 congruent angles; acute triangles have 3 acute angles; obtuse triangles have 1 obtuse angle; and right triangles have 1 right angle. The lesson teaches how to classify triangles based on these properties of their sides and angles.
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This document provides an overview of geometric shapes, including their properties, classifications, and examples. It begins by introducing basic shapes such as triangles, quadrilaterals, and regular polygons. It then discusses properties of triangles including their sides and angles. It also describes how to classify triangles and quadrilaterals based on their sides and parallel lines. The document further explains line symmetry, rotational symmetry, and provides examples of geometric shapes in everyday life and classroom activities.Triangles all around us - Geometry
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This document defines and classifies triangles based on the lengths of their sides and the measures of their interior angles. It explains that triangles can be equilateral, isosceles, or scalene based on whether their sides are all equal, two sides are equal, or all sides are unequal. Triangles can also be right, obtuse, or acute based on whether they have a 90 degree angle, an angle over 90 degrees, or all angles under 90 degrees. The document provides examples and diagrams to illustrate different types of triangles.Algebra Important Formulae -x std
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Easy Quick View Formuls to Remmber-
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This document contains formulas for calculating the areas, volumes, and surface areas of various 2D and 3D shapes. It includes formulas for calculating the area of triangles, parallelograms, trapezoids, circles, rhombi/kites, and regular polygons. For 3D shapes it includes formulas for calculating the volume, surface area, and lateral area of rectangular prisms, other prisms, cylinders, pyramids, and cones. It also contains the Pythagorean theorem and formulas for calculating trigonometric ratios, circumferences, and the altitude of a triangle.
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- 4. Isosceles Triangle 2 congruent sides
- 5. Scalene Triangle no congruent sides
- 6. Equiangular Triangle 3 congruent angles
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