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ResourceSpotlight
Students will first observe that a diagonal of a square divides the square into two 45°-45°-90° triangles and that a median of an equilateral triangle divides the triangle into two 30°-60°-90° triangles. They then measure the sides and angles of these special right triangles, store the side lengths as variables, and manually collect data into a spreadsheet, where they find the values of the ratios among the sides.
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Texas Instruments, Inc.
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ResourceSpotlight
In this activity, students will explore the ratios of right triangles. Students will discover that we can find the measure of the angles of a right triangle given the length of any two sides.
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Texas Instruments, Inc.
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ResourceSpotlight
In this activity, students will explore proofs of the Pythagorean Theorem. Students will explore the proof of the Pythagorean Theorem using area of squares, area of triangles and trapezoids, and by dissection. Students will then be asked to apply what they have learned about the Pythagorean Theorem.
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Texas Instruments, Inc.
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Definition and properties of right triangles
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Math Open Reference
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Formulas for right triangles.
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Ask Dr. Math
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Great description of the parts of a right triangle
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University of Illinois at Urbana-Champaign
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A very nice graphical view of the Pythagorean theorem.
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math.about
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This website will help you with squares and their properties. Such as side length, diagonal length, area and perimeter.
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WebMath
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This page will allow you to calculate things related to a right triangle. Such as the base, the height, area, perimeter, and Pythagorean Thm.
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WebMath
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This provides step by step instructions on how to solve for the sides of a right triangle given the area and perimeter.
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Analyze Math
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