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Proving a Triangle is Acute, Right or Obtuse
Author:
Keith Hatfield
Using Pythagorean's Theorem to Find out if triangles are acute, obtuse, or right
GeoGebra
New Resources
Angles of Intersecting Lines
Untitled
Graph of y = ax² + bx + c
Quiz: Vertical Angles and Linear Pairs
Trefoil Knot
Discover Resources
Form the inequality and solve it
Extra Credit Temp Lab
Decimals
對數基本性質｜Basic properties of Logarithms
Wallace-Simson Line, Orthopole, and Deltoid
Discover Topics
Hypothesis Testing
Quadratic Equations
LCM and GCD
Polynomial Functions
Curve Sketching