Curated OER
Perimeter and Area Worksheet II
In this perimeter and area worksheet, students find the perimeter and area of polygons. They use the proper formula to find the perimeter and area of circles, parallelograms, triangles, and rectangles. Students complete solve ten problems.
Curated OER
Geometric Applications
In this geometry worksheet, students solve 5 word problems. Each of the problems involves finding one side of a right triangle. Story problems relate the Pythagorean Theorem to building ramps, shadows, and the length of a banner.
Curated OER
Pythagorean Theorem
In this Pythagorean theorem learning exercise, students use the Pythagorean theorem to find the missing unit of the triangle. Students solve 10 problems.
Curated OER
Perimeter and Area 5
In this calculating area worksheet, students use their problem solving skills and the information provided to find the area of 6 triangles.
Curated OER
Some Shapes
Introduce the names and properties of basic 2-D shapes. Images and defining features of the circle, rectangle, triangle, and square are shown. Each image is colorful and includes a happy, smiling face, perfect for younger learners.
Curated OER
Quick Recognizing Shapes Guide
Although there isn't anything for kids to complete in this shapes handout, they can use it as a guide for drawing shapes and recognizing their attributes. There are eight shapes described here: circle, oval, triangle, rectangle,...
Curated OER
Recognize and Draw Shapes
Each of these 10 shapes comes with a question for learners to answer as they analyze its attributes. They examine the following shapes: hexagon, trapezoid, pentagon, circle, diamond, parallelogram, rectangle, triangle,...
Radford University
Right Triangle Applications: Lesson 3
Find the connection between trigonometry and tornadoes. Pairs investigate a tornado in Joplin, Mo., and use trigonometry to find its size. The pupils determine the path of the tornado and find the distance needed to travel to help...
Curated OER
Algebra 2 & Trigonometry Practice: Law of Sines
In this law of sines worksheet, students solve 9 multiple choice and short answer problems. Students use the law of sines to missing side lengths and angles of triangles.
EngageNY
Congruence, Proof, and Constructions
This amazingly extensive unit covers a wealth of geometric ground, ranging from constructions to angle properties, triangle theorems, rigid transformations, and fundamentals of formal proofs. Each of the almost-forty lessons...
Curated OER
Trigonometry Review Sheet
Get the trig facts fast, and use the review sheet as a guide in the classroom. The worksheet also includes a document version if any changes are needed to the problems. The information includes a small degree/radian chart, a graph of all...
Curated OER
Trig Cheat Sheet
Your pre-calculus learners will make use of this wonderful cheat sheet that summarizes all things trigonometric. Definitions based on both the unit circle and the right triangle are included, as well as many convenient trigonometric...
Curated OER
Review of Triangles
Learners investigate the Pythagorean Theorem. In this geometry lesson, students define angles and sides of right triangles. They calculate the area and surface area using formulas derived by the Pythagorean Theorem.
Curated OER
Triangle Review
In this triangle review learning exercise, students define what type of triangle is being described, then draw a picture of it. A reference web site is given for additional activities.
Curated OER
Shapes Worksheet: Learning Triangles
In this shapes learning exercise, students practice tracing 5 dotted triangles and then draw 3 triangles on their own in the space provided. Students then look at a box full of shapes and color the 7 triangles that can be found within...
Curated OER
Angles in a Triangle
In this geometry instructional activity, 10th graders determine the measure or measures of the missing angle(s) in a triangle. The one page interactive instructional activity contains four questions. Answers and hints are included.
Curated OER
Identify Different Types of Triangles
For this geometry worksheet, students identify different kinds of triangles. Students are given four triangles with their measurements and are to determine which triangle it is by choosing from six different kinds.
Curated OER
Triangle Wars
Learners explore geometry by participating in a class card game. In this triangle instructional activity, students utilize playing cards with shapes on them which they group up and discard, similar to "Old Maid." Learners complete a...
Curated OER
Squares and Triangles in a Picture
In this geometric shapes worksheet, students analyze a picture of a house and trace all the squares and triangles. Students color the shapes according to the directions.
Concord Consortium
Three Rubber Bands
Stretch your mind about triangles. Given a triangle, scholars consider a smaller triangle formed when they stretch three rubber bands from each vertex to the opposite side. They determine the ratios of the areas and perimeters of the...
Curated OER
Inscribing a Circle in a Triangle
Pupils investigate inscribing a circle in a triangle. They use Cabri Jr. to draw a triangle, locate the incenter, and use the distance from the incenter to a side of the triangle to inscribe a circle. The dynamic nature of the geometry...
Curated OER
Relationship between Exterior and Remote Interior Angles in a Triangle
In this triangle worksheet set, 9th graders find the relationship between the exterior and remote interior angles in triangles. They determine the formula, and apply it in 15 problems. They use a compass as needed to measure angles.
Curated OER
Properties of the Centers of a Triangle
High schoolers investigate properties of the four centers of a triangle and explore a special property of the circumcenter and orthocenter of a triangle. This lesson requires the use of Cabri, Jr.
Curated OER
Perimeter of Scalene Triangle
In this geometry worksheet, 10th graders find the perimeter of scalene triangles, or triangles where the 3 sides are different lengths. There are 6 questions with an answer key.
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