Equations and geometry
10 videos
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26
Algebra - Equations and Geometry: Where Algebra Meets Shapes
Learn how algebra and geometry work together to solve for missing lengths and angles using equations from line segments, supplementary angles, and triangles.
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10
Algebra - Setting Up Equations from Line Segments
Learn how to use the segment addition postulate to solve for unknown segment lengths using algebraic equations with variables.
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4
Algebra - Solving a Segment Equation Step by Step
Learn to solve segment addition problems using algebra. Find unknown lengths by setting up equations where parts equal the whole, then verify your solution.
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3
Algebra - Vertical, Complementary, and Supplementary Angles
Learn three key angle rules: vertical angles are equal, complementary angles sum to 90°, and supplementary angles sum to 180°. Includes a practical example.
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2
Algebra - Solving an Angle Equation: Supplementary Angles
Learn how to solve for x when two angles on a straight line are supplementary. Step-by-step guide to finding angle measures that add up to 180 degrees.
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1
Algebra - Why Triangle Angles Always Add to 180°
Learn why all triangle angles sum to 180 degrees and how to calculate an unknown angle when two angles are known.
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7
Algebra - The Pythagorean Theorem Explained
Learn the Pythagorean theorem: a²+b²=c² for right triangles. See how to find the hypotenuse using legs of 3 and 4 to get 5.
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Algebra - Finding a Missing Side with the Pythagorean Theorem
Learn how to find a missing leg of a right triangle using the Pythagorean theorem when you know the hypotenuse and one leg.
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3
Algebra - What Are Similar Triangles?
Learn what similar triangles are: triangles with the same shape but different sizes. Discover how equal angles create proportional sides and the AA similarity shortcut.
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2
Algebra - Solving for Missing Sides in Similar Triangles
Learn how to find missing sides in similar triangles using proportions and cross multiplication. Includes a real-world example and step-by-step problem solving.