Geometry

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Geometric Relations: Reflection Symmetry
Geometric Relations: Reflection Symmetry 150 150 SchoolTutoring Academy

A shape is said to be symmetric if it is exactly like another if flipped, slid or turned. The line of symmetry divides the shape into symmetry. In two-dimensional shapes…

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What are the Surface Area Formulas?
What are the Surface Area Formulas? 150 150 SchoolTutoring Academy

Surface area is the area of a given three dimensional surface. Surface area is the measure of how much area a solid object has, expressed in square units. Below are…

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3D Volume Formulas
3D Volume Formulas 150 150 SchoolTutoring Academy

Volume is defined as the amount of space occupied by a 3-dimensional object like a prism, cylinder or sphere. The volume of a container is generally understood to be the…

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Special Right Triangles
Special Right Triangles 150 150 SchoolTutoring Academy

A special right triangle is a right triangle with some special feature that makes the calculations easier. There are two types of special right triangles: 30° – 60° – 90°…

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Equations of a Circle
Equations of a Circle 150 150 SchoolTutoring Academy

A circle is the set of all points that are the same distance, r, from a fixed point called center.   If (x, y) is any point on the circle…

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Congruent Triangle Theorem and Postulates
Congruent Triangle Theorem and Postulates 150 150 SchoolTutoring Academy

Two triangles are said to be congruent if they have same shape and same size. When triangles are congruent corresponding sides (sides in same position) and corresponding angles (angles in…

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Geometry: Angles Formed by Parallel Lines and a Transversal
Geometry: Angles Formed by Parallel Lines and a Transversal 150 150 SchoolTutoring Academy

A transversal is a line that intersects two or more lines. When a transversal cuts (or intersects) parallel lines several pairs of congruent (equal) and supplementary angles (sum 180°) are…

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Area of 2D figures
Area of 2D figures 150 150 SchoolTutoring Academy

The area of a figure measures the region enclosed by the figure. It is measured in square units, for examples, square inches, square centimeters, square yards, square meters. The table…

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Understanding Solid Figures Terminology – Vertex, Corner and Edge
Understanding Solid Figures Terminology – Vertex, Corner and Edge 150 150 SchoolTutoring Academy

Solid figures are three-dimensional (3-D) figures that have length, height and width. The three-dimensional figure can be hollow of solid. Let’s get familiar with few terms to understand the properties…

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Quadrilaterals and their Properties
Quadrilaterals and their Properties 150 150 SchoolTutoring Academy

Quad means four and lateral means sides. A quadrilateral is a 2-dimensional closed shape with four sides and four vertices (corners). The sum of the interior angles of a quadrilateral…

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