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Geometry: Right Triangles and Trig Classroom ActivitiesDownload
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Distances in the Coordinate Plane

Students will explore distances in the coordinate plane. After finding the coordinates of a segment’s endpoints, students will substitute these values into the distance formula and compare the results to the measured length of the segment. Then students will find the distance between the endpoints using the Pythagorean Theorem.
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    TI-84 Plus CE
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    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
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The Pythagorean Theorem

Students will construct figures that prove the Pythagorean Theorem in two different ways.
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    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download9,736
RatiosOfRightTriangles_Overview

Ratios of Right Triangles

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.
  • TI-84 Plus Silver Edition
  • TI-84 Plus
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Sine. It's the Law.

Students will investigate the ratio of the sine of an angle to the length of the opposite side.
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    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download9,732
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Trigonometric Ratios

Students discover the trigonometric ratios through measuring the side lengths of similar triangles and calculating their ratios. The formal definitions of the sine, cosine, and tangent or an angle are presented and applied to find the missing side lengths.
  • ax-icon-color-device
    TI-84 Plus CE
  • ax-icon-color-device
    TI-84 Plus C Silver Edition
  • TI-84 Plus Silver Edition
  • TI-84 Plus
Download8,546