Worksheet
Mt. San Antonio Collage

The Trapezoid

For Students 9th - 12th Standards
Enjoy this nicely organized activity that puts together multiple problems regarding trapezoid proofs. The resource can be used as a guide that begins with proving properties and ends with solving for measures of line segments.
Worksheet
Curated OER

Congruent Triangles

For Students 10th
In this geometry worksheet, 10th graders identify the corresponding parts of congruent triangles.  The one page worksheet contains four problems.  Answers are not provided. 
Worksheet
Curated OER

Easy Worksheet: Pascal's Triangle

For Students 9th - 12th
In this Pascal's Triangle worksheet, students solve 4 short answer problems. Students shade multiples of a given number on Pascal's Triangle. Students shade rows of Pascal's Triangle using mod eight and mod three.
Worksheet
Curated OER

Right Triangle

For Students 8th - 9th
In this right triangle worksheet, students find the length of sides of a right triangle. This one-page worksheet contains 1 problem.
Lesson Plan
Curated OER

Right Triangles and The Pythagorean Theorem

For Teachers 8th - 9th
Learners play a game to reinforce concepts of the Pythagorean Theorem. In this geometry lesson, students find the missing angle and lengths of a right triangle. They use properties of trigonometry about sine, cosine and tangent to solve...
Lesson Plan
Curated OER

Constructions of Isosceles and Equilateral Triangles

For Teachers 4th - 9th
Young scholars explore the difference between drawing and constructing a triangle utilizing The Geometer's Sketchpad on the computer. They create, develop and script constructions for both isosceles and equilateral triangles. Each...
Worksheet
Curated OER

Right Triangles

For Students 10th
In this right triangles worksheet, 10th graders solve 10 different problems that include determining the means proportionally in each right triangle. First, they use the given information to determine the measure of each line segment....
Worksheet
Curated OER

Recognize Triangles

For Students Pre-K - 1st
In this shapes worksheet, students are asked to "colour" all of the triangles they find on the page. There are 10 shapes on the page and 4 are triangles. The second page contains suggestions for teachers on activities with 2-D shapes.
Worksheet
Curated OER

Triangles

For Students 10th
In this triangles activity, 10th graders solve and complete 2 different problems. First, they find the perimeter of each triangle as described. Then, students find the slope of each side and altitude to each side of the triangles. In...
Worksheet
Curated OER

Using Trigonometry to Find Area

For Students 11th - 12th
In this Algebra II/Trigonometry worksheet, students use trigonometry to determine the area of a triangle or a parallelogram.  The one page worksheet contains ten problems.  Answers are not provided. 
Worksheet
Curated OER

The Law of Cosines

For Students 11th - 12th
For this Law of Cosines worksheet, students are asked to demonstrate the ability to apply the Trigonometric Law of Cosines and the Inverse Law of Cosines to solve for sides and angles of right triangles. 
Lesson Plan
Curated OER

Connecting Area Formulas Produces a Beautiful Formula

For Teachers 11th - Higher Ed
In this math worksheet, young scholars find the area of the triangle using the formula of 1/2 bh. Then they find the area using an alternative method.
Worksheet
Curated OER

Parts of Similar Triangles

For Students 10th
In this parts of similar triangles learning exercise, 10th graders solve and complete 15 different statements related to naming the parts found in similar triangles. First, they identify each definition stated that describes an everyday...
Lesson Plan
Curated OER

How To Find the Area of a Square And Rectangle

For Teachers 4th - 6th
Students practice using the formula to calculate the area of a square or triangle. They participate in large group guided practice using simple area of squares problems then complete a series of problems calculating the area of rectangles.
Lesson Plan
Curated OER

Fractions Describe Parts of a Whole

For Teachers 3rd
Third graders represent fractions as part of a whole. In this fractions lesson, 3rd graders use manipulatives to show how a fraction is a part of a whole. This lesson includes individual practice and an assessment instead of direct...
Lesson Plan
EngageNY

Construct a Nine-Point Circle

For Students 9th - 10th Standards
There are an infinite number of points on a circle; can you find nine of them? After putting together a nine-point circle, pupils use constructions and their knowledge of triangle segments to determine the center of the circle. Learners...
Lesson Plan
Curated OER

Understanding a Narrative: The True Story of Balto

For Teachers 4th - 6th
Strong comprehension questions and a list of initiating events that drive the plot make this resource worth a try in your classroom. Intended for use with tools specific to the mindwing concepts reading strategy system, the outline...
Activity
Curated OER

Geometric Pictures of One Half

For Teachers 3rd Standards
A learning task that involves creative ways of thinking permits children to use paper models as a way to visualize the fraction one-half. Learners can fold or cut their models in such a way that the unshaded regions, and shaded...
Lesson Plan
Curated OER

Triangle Puzzler

For Teachers 4th - 5th
In this math worksheet, learners analyze a chart and identify the names of 9 types of triangles. Students also find as many kinds of triangles they can in a given figure.
Worksheet
Curated OER

Geometry Course Review

For Students 10th
In this geometry review set of worksheet, 10th graders solve and complete 139 various types of problems. First, they find the slope-intercept form of a line passing through a point and parallel to a line given. Then, students find the...
Lesson Plan
Curated OER

Geo Jammin' By DeSign - Day 1, Lesson 4: Transformation Station

For Teachers 2nd
Second graders manipulate triangles to discover the concepts of slides, flips and turns of a geometric shape.
Worksheet
Curated OER

Chapter 7 Final Review Extra Problems

For Students 9th - 11th
In this Geometry review worksheet, learners describe the relationships of two common triangles. They find the area of a segment created by a given sector of a circle for two circles. Students find the length of an arc bounded by the...
Lesson Plan
Curated OER

Areas of Polygons

For Teachers 9th - 12th Standards
Young mathematicians calculate the area of polygons in this algebra lesson plan. They find the determinant as they calculate the areas for triangles and quadrilaterals. They also use scalar multiplication to find the determinant.
Worksheet
Curated OER

Guided Notes on Area

For Students 9th - 10th
In this area worksheet, learners find the area of rectangles, triangles and circles. This eight-page worksheet contains approximately 36 problems. Examples and explanations are provided. Answers are included at the end of the worksheet.

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