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Incenter of a Triangle
Tenth graders find the incenter of a triangle. In this geometry lesson, 10th graders define the way to create an incenter with an angle bisector. They differentiate between incenter and incircle.
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Investigating Trigonometric Ratios Through Similar Right Triangles
Students identify similar and congruent right triangles. In this geometry lesson, students use trigonometric ratios to identify missing sides and angles of a triangle. They differentiate similar and congruent triangles.
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Corresponding Sides and Angles of Similar Triangles
Young scholars differentiate between corresponding sides ad angles of two triangles. In this geometry lesson, students identify the differences as well as the similarities between two triangles. They differentiate between similar and...
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Investigating Trigonometric Ratios Through Similar Right Triangles.
49Students investigate the properties of right triangles. In this geometry lesson plan, students differentiate between similar and congruent triangles. They use the Pythagorean Theorem to find the missing angles and sides.
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What is an Iron Triangle?
Students discuss how interest groups, congress and the executive branch play a role in policy making to make up the Iron Triangle. They list the three points of the Iron Triangle and explain the role they have on public policy. Students...
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Leveled Problem Solving Areas of Triangles and Trapezoids
In this geometry learning exercise, 6th graders calculate the area of triangles and trapezoids using the given formulas. They use the formulas to find measurements of lines that are part of the triangles and trapezoids.
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Similar Triangles on the Coordinate Plane
Students investigate triangles and their properties. In this geometry instructional activity, students differentiate between similar and congruent triangles. They use the SSS theorem to help identify the triangles that are similar or...
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Why can't We Use SSA to Prove Triangles Congruent?
Pupils investigate triangles and congruences. In this geometry lesson, students differentiate between inductive and deductive reasoning. They differentiate between similar and congruent triangles.
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Investigating the Sierpinski Triangle
Students solve and analyze the sierpinski's triangle. In this geometry lesson, students identify properties and theorem of triangles. They solve problems involving angles and sides of triangles.
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Congruent Triangles
Tenth graders explore congruent triangles. In this geometry lesson, 10th graders investigate the conditions necessary to prove two triangles are congruent by SSS, ASA, AAS, or SAS.
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Triangle Classification
Students classify different types of triangles. In this geometry instructional activity, students identify and use properties of triangles. They differentiate between isosceles and equilateral triangles.
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Pythagorean Theorem: Triangles and Their Sides
Students investigate triangles and their relationship to each other. For this geometry lesson, students solve right triangles using the properties of the Pythagorean Theorem. They differentiate between right, acute, straight and oblique...
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Scalene Triangles
In this scalene triangles worksheet, learners look over and analyze 11 triangles and determine which ones are scalene triangles.
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Constructing Midsegments of Triangles
Pupils construct midsegments. In this geometry instructional activity, students make conjectures and apply properties of triangles to solve problems. They complete an activity on the computer.
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Triangle Inequalities
In this geometry worksheet, students use the inequality theorem to figure out if three segments will make a triangle. They are given the measures of two segments and must figure out the third segment on their own. There are 20 questions.
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Isosceles Triangle Investigation
Pupils solve problems with isosceles triangles. In this geometry lesson, students identify and use the properties of triangles to solve their problems. They find the median, altitude, and angles to the triangles.
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Solving Right Triangles
Students investigate the basic trigonometric functions. In this geometry/trigonometry instructional activity, students explore strategies to solve right triangles using basic trigonometric functions. The instructional...
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All Around Triangles and Quadrilaterals
In this triangle/quadrilateral worksheet, learners use a centimeter ruler to draw triangles and quadrilaterals with given perimeters. Answers are included on page 2.
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The Triangle Shirtwaist Fire: 100 Years Later
Eleventh graders examine the impact of the Triangle Shirtwaist Fire. In this American History lesson, 11th graders analyze various sources. Students create a cartoon representing the impact of this fire on the United States...
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Eighteen SSS or SAS Triangle Congruence Problems
In this triangle congruence worksheet, students state if triangles are congruent and if the congruence is based on side, side, side or the side, angle, side theorems in eighteen problems. The solutions are found on the last two pages.
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Exploring Congruent Triangles
In this congruent triangles worksheet, 10th graders solve 10 different problems related to exploring various types of congruent triangles. First, they label the corresponding parts and use the figures to complete each statement. Then,...
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Tricky Twenty Triangle
In this triangle number puzzle worksheet, students place the digits 1 - 9 in each box so that every side of a triangle add up to 20. They place number at each vertex with two digits between them.
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A Trying Triangle Problem
In this geometry worksheet, students calculate the length of the sides of a given triangle. They also find the perimeter and area of the triangles given its side values. There is an answer key with this problem.
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Make triangles
In this triangles activity, students make triangles using a pinboard and elastic bands and then drawing their triangles on the sheet. Students draw 6 triangles.
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