Lesson Plan
Curated OER

Study Buddies: Classifying Triangles

For Teachers 4th - 5th
In this math worksheet, students analyze an informative chart about the measurement and angles of equilateral, isosceles and scalene triangles. Students then answer 5 questions about classifying triangles.
Worksheet
Curated OER

Triangle Designs

For Students 4th - 6th
In this triangles activity, students draw different triangles and write how many sides and angles each one has. Students draw 4 kinds of triangles and have 2 that are impossible to draw.
Worksheet
Curated OER

Triangles

For Students 4th
In this triangles worksheet, 4th graders study the lengths that are stated for 3 triangles and describe each triangle by its sides. Students describe 3 additional triangles by their angles.
Worksheet
Curated OER

Triangles and Congruence

For Students 8th - 10th
Can your class construct triangles and determine congruence? Find out with this well put together worksheet. THey construct triangles to given specifications and identify if they are congruent. There are 3 muti-step problems to solve.
Worksheet
Curated OER

Triangles

For Students 6th - 7th
In this triangle activity, students observe pictures of triangles. They name the triangles according to the length of their sides. Twelve right, equilateral and isosceles triangles are provided for identification on this one-page...
Assessment
Concord Consortium

Triangles: Angle Space

For Students 9th - 12th
Three angles in a triangle, three-dimensional space, it all seems connected somehow. Given several different triangles, pupils use the three angles of the triangle as coordinates to plot points in three-dimensional space. They explore...
Worksheet
Curated OER

Identifying Triangles

For Students 7th - 9th
In this triangles practice learning exercise, learners respond to 4 questions that require them to identify the pictured triangles as acute, right, obtuse, scalene, isosceles, or equilateral triangles.
Worksheet
Curated OER

Find the Perimeter of Triangles

For Students 5th - 7th
In this perimeter worksheet, students calculate the perimeter of various different triangles. There are four problems to solve.
Worksheet
Curated OER

Triangles

For Students 6th - 8th
In this triangle worksheet, students identify triangles according to the characteristics of their sides. Students identify scalene, isosceles, equilateral and right triangles. Eleven triangle problems are provided in this one-page...
Worksheet
Raytheon

Understanding Triangles

For Students 6th - 8th
In this understanding triangles instructional activity, students read 6 pages of examples and explanations about identifying triangles, determining length of sides and degrees of angles, including the hypotenuse, then answer 28...
Lesson Plan
Curated OER

Geometry Regents Questions: Isosceles Triangle Theorem

For Teachers 9th - 12th
In this isosceles triangle worksheet, students solve 19 multiple choice and short answer problems.  Students use the isosceles triangle theorem to determine unknown angle measures.
Worksheet
Curated OER

Perimeter of Triangle Worksheet

For Students 7th - 8th
In this perimeter learning exercise, students find the perimeter of given triangles.  This two-page learning exercise contains 6 problems.  Answers are provided on the last page.
Worksheet
Curated OER

Classifying Triangles

For Students 8th - 10th
In this classifying triangles learning exercise, students explore given lengths or angle measurements and then classify each triangle as isosceles, scalene or equilateral. They also determine if the triangle may be right, acute or...
Worksheet
Curated OER

Triangles

For Students 10th
In this triangles worksheet, 10th graders solve and complete 23 various types of problems. First, they match the triangle description with the most specific name and write the letter on the line provided. Then, students classify the...
Worksheet
Curated OER

Triangles

For Students 10th
In this triangles worksheet, 10th graders solve and complete 22 different problems related to various types of triangles. First, they name the shortest and longest sides and the smallest and largest angles in each of triangles...
Worksheet
Curated OER

Triangles

For Students 6th - 10th
In this triangles worksheet, students solve six word problems where they determine the angles measures in different triangles.
Worksheet
Curated OER

Isosceles Triangle Theorems

For Students 10th - 11th
In this isosceles triangle worksheet, students use theorems to determine if given triangles are congruent or not congruent. In addition, they identify the described triangles as isosceles or right. This one-page worksheet contains ten...
Worksheet
Curated OER

Triangles and Quadrilaterals

For Students 10th
In this triangles and quadrilaterals worksheet, 10th graders solve 6 different problems related to using triangles and quadrilaterals in informal geometry. They determine how many lines of symmetry an equilateral triangle and an...
Worksheet
Curated OER

Pythagorean Theorem

For Students 8th - 9th
In this Pythagorean Theorem worksheet, students determine the length of a missing side of triangles. They read story problems, draw diagrams, and use the Pythagorean Theorem to solve real life problems. This one-page worksheet contains...
Lesson Plan
Willow Tree

Common Geometric Figures

For Students 8th - 11th Standards
Geometry could be called the study of figures. An overview of the figures found in a typical geometry course contains a study of different triangles, quadrilaterals, and regular polygons. 
Interactive
Curated OER

Trigonometry Applications

For Students 10th
For this geometry worksheet, 10th graders solve application word problems involving the use or right triangle trigonometry, including angle of elevation or depression. The one page interactive worksheet contains five questions. Hints,...
Worksheet
Curated OER

Identify Triangles

For Students 3rd - 5th
In thins triangles review worksheet, learners examine 3 triangles and their measurements. Students classify them as acute, right, obtuse, equilateral, isosceles, or scalene.
Worksheet
Curated OER

Triangles

For Students 3rd - 4th
In this triangles worksheet, students identify 3 triangles by the length of their sides and 3 triangles according to their internal angles.
Worksheet
Curated OER

Classifying Triangles

For Students 10th
In this classifying triangles instructional activity, 10th graders solve 9 various problems that classify triangles into categories. First, they refer to the figure shown of an isosceles triangle with two line parallel. Then, students...