Interactive
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Triginometry: Find the Unknown Side

For Students 9th - 12th
For this Trigonometry worksheet, students use the Pythagorean theorem to calculate the length of side x. There are 5 questions to solve and submit.
Interactive
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Area of Shapes

For Students 7th - 9th
In this area of shapes instructional activity, students determine the area of equilateral triangles, acute triangles, and compound figures. This one-page instructional activity contains 3 multi-step problems.  Answers are provided...
Interactive
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Tangents

For Students 10th - 12th
In this tangents worksheet, students use tangent ratios to find the length of the sides of right triangles. This one-page worksheet contains 10 multi-step problems.  Answers are provided.
Interactive
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Area of Figures That Include Circles

For Students 10th - 12th
In this area worksheet, students calculate the perimeter and area of given complex figures.  They determine the area of shaded regions, and find the distance between straight lines.  This one-page worksheet contains 4...
Interactive
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Pythagorean Theorem

For Students 6th - 10th
In this measurement learning exercise, students will be given 2 sides of a right triangle, they will determine if the missing side is a leg or the hypotenuse. They will use the Pythagorean Theorem to create an equation and find the...
Worksheet
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Easy Worksheet: Classify the Triangle

For Students 9th - 12th
In this classify the triangle worksheet, students solve 6 short answer problems. Students identify the type of triangle being described according to its angle measures and side lengths.
Worksheet
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Easy Worksheet: Area of Triangles

For Students 9th - 12th
In this area of a triangle learning exercise, students solve 6 graphing problems. Students find the area of a triangle given the three coordinates of the vertices.
Worksheet
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Easy Worksheet: Trigonometry

For Students 9th - 12th
In this trigonometry worksheet, students solve 4 short answer problems. Students find the sine, cosecant, secant or cotangent of an angle given a diagram of a right triangle with various measurements labeled.
Worksheet
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Easy Worksheet: Right Triangles and Circles

For Students 9th - 12th
In this right triangles and circles worksheet, students solve 4 short answer problems. Students describe a right triangle formed by point on a circle and an angle measure.
Lesson Plan
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Pilots, Airplanes, and the Tangent of Three Degrees

For Teachers 9th - 12th
Students explore how to use trigonometry in the aviation field.  In this aviation lesson students complete trigonometry equations that show what planes should do to land their airplanes.
Lesson Plan
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Napolean Triangle

For Teachers 9th - 11th
Students investigate the Napoleon triangle theory. In this polygon lesson, students  differentiate between the boundary points, interior and lattice point of a polygon. They apply concepts of equilateral triangles to solve...
Worksheet
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Kuta Software - Infinite Geometry: Similar Triangles

For Students 9th - 12th
In this similar triangles activity, students solve 20 short answer problems. Students determine if two given triangles are similar.  Students determine the type of similarity given two triangles. Students are given a sketch of the...
Worksheet
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SSS, SAS, ASA, and AAS Congruence

For Students 8th - 10th
Students will determine if triangles are congruent and state the appropriate congruence theorem. In this geometry lesson, students will determine what information is needed to determine if a pair of triangles are congruent using ASA,...
Worksheet
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Geometry Take Home Question

For Students 9th - 12th
In this triangles, parallelograms, and kites worksheet, students solve 4 short answer problems. Students find the area of the given triangle. Students construct parallelograms and kites by cutting out and manipulating the given triangles.
Worksheet
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Pythagorean Theorem Homework

For Students 9th - 12th
In this Pythagorean Theorem worksheet, students solve 3 short answer problems. Students use the Pythagorean Theorem to find the length of a triangle's hypotenuse.
Worksheet
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Special Right Triangles

For Students 9th - 12th
In this special right triangles worksheet, students solve 15 short answer problems. Students use trigonometric functions to find missing side lengths of various right triangles.
Worksheet
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Triangle Fundamentals

For Students 8th - 12th
For this geometry worksheet, students observe a triangle marked with three angles and are given two measures to find the missing third measure. A second diagram is given with six angles. There are 20 questions.
Worksheet
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Triangle Fundamentals Multiple Choice

For Students 7th - 12th
In this triangles learning exercise, students identify the parts of a triangle.  They determine the value of an angle measurement, and identify the characteristics of triangles.  This two-page learning exercise contains 10...
Worksheet
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Isosceles Triangles

For Students 9th - 12th
In this geometry worksheet, high schoolers set up equations to solve for the missing angle or side of an isosceles triangle. All the equations turn out to be linear and not quadratic. There are 15 questions. 
Worksheet
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Geometric Mean Homework

For Students 10th - 12th
In this geometric mean learning exercise, students find the geometric mean of given data.  They examine right triangles.  This one--page learning exercise contains 10 problems.
Worksheet
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Pythagorean Theorem

For Students 9th - 12th
In this Pythagorean theorem worksheet, students use the Pythagorean theorem to find the length of a missing side of a right triangle.  This two--page worksheet contains 15 problems.
Worksheet
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Trigonometry

For Students 10th - 12th
In this right triangles worksheet, students use trigonometric ratios to determine the length of a side of a triangle or a missing angle measurement.  This two-page worksheet contains 20 problems.
Worksheet
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Trigonometry Homework

For Students 10th - 12th
In this right angles worksheet, students use trigonometric ratios to determine the length of a missing side or a missing angle of a right triangle.  This two-page worksheet contains 19 problems.
Worksheet
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Tangents

For Students 9th - 12th
In this tangents activity, learners determine the length of a missing side of a right triangles.  They use tangent lines to solve problems.  This two-page activity contains 11 multi-step problems.