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Circles and Triangles: Sun
In this coloring shape worksheet, students trace the circles and color them yellow. Kids trace the triangles and color them orange. Students then trace the circle and triangle at the bottom of the page.
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Shapes and Color: Rectangles and Triangles
In this shape and color instructional activity, students trace rectangles, coloring them pink, then trace circles, coloring them purple. Students then trace and color a set of 6 circles.
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Shapes and Colors: Triangles and Ovals
In this shape and color worksheet, students trace triangles coloring them brown, then trace ovals and color them pink. Students also trace and pictures of a ice cream cones made of triangles and ovals.
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Tracy Triangle
In this triangle worksheet, 1st graders study the picture of the triangle and then memorize the triangle song. Students practice drawing triangles in the provided space.
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Perimeter and Area of Triangles 2
In this measurement learning exercise, 5th graders study the different triangles and then use the given measurements to find the perimeter and area for each.
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Calculating the Perimeter of a Triangle
In this geometry worksheet, 5th graders read how to find the perimeter of a triangle. They use the P= S1+S2+S3 formula to find the perimeter of three triangles.
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Shapes Matching Worksheet
Using this worksheet, students practice identifying basic shapes, such as an oval, rectangle, triangle, and hexagon. This worksheet would be ideal for preschool or kindergarten students. 
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Creating Tessellations
In this creating tessellations worksheet, 10th graders solve 2 word problems that include creating various tessellations. First, they explore the various techniques used to form tessellations, including triangles, quadrilaterals,...
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Brain Teaser- How Many Triangles?
In this geometry worksheet, students examine a picture that has many hidden triangles. Students count the triangles they discover and color the picture.
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Proposed Problems
In this math worksheet, students read the information about an isosceles triangle. The ratio of the lengths of two sides is equal. They determine the exact measures of its angles.
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Power Question 2
In this math worksheet, students determine the locus of points, M, in plane ABC, such that KMAB=KMAC. They also draw the triangle ABC. Then determine the proof of the interior angles determining the identity of the equilateral triangle.
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Puzzling Shapes
In this math activity, students count the number of rectangles and triangles they see in two drawings. Each figure has overlapping shapes.
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Types of Triangles
In this math worksheet, students classify the listed triangles and practice labeling them correctly. The definition of each type is necessary prerequisite knowledge.
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Squares and Triangles
In this squares and triangles worksheet, students trace five triangles and six squares, cut out each one and then place them together to make a variety of shapes.
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Triangles Maze
In this math worksheet, students analyze the shape of a triangle to help Ollie Octopus find his way home. Students follow the path in the maze by only coloring the triangles.
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Trace the Dancing Triangles
In this triangle tracing worksheet, students will trace and color nine dancing triangles. The triangles have faces, arms, and legs.
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Number Triangles
In this elementary worksheet, students recognize the number order for the 12 triangles and they cut and glue them in the spaces around the circle.
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Space Shapes
In this Geometry worksheet, 1st graders are challenged to color and identify different shapes using the theme of outer space and a rocket ship.
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Building With Triangles
Students participate in a unit on triangles. Through the unit they explore different way to make basic shapes using triangles. They also examine the basic properties of triangles and the relationships among basic geometrical shapes in...
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Tricky Triangles
Third graders engage in a lesson that is concerned with the playing of a Trick Triangle Game while focusing upon developing skills of addition, subtraction, multiplication, and division. They play the game and practice rounding of...
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Exploring Altitudes in Math
Students draw and calculate altitudes. They draw the altitude of acute, right and obtuse triangles and calculate the altitude of a triangle using the Pythagorean theorem.
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In the Path of the Ancients: Unearthing Formulas for Area
High schoolers apply the formulas for the area of parallelograms and triangles.  Through guided practice, students discover the correct way to apply the formulas.  Working in pairs, they write their own problems featuring the formulas.
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Exploring Centers of a Triangle: Part 1
Students use problem solving skills, formal geometry, and The Geometer?s Sketchpad. They model and solve two real-world problems by constructing the in center and circumcenter of triangles.
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Using Polynomials To Find Perimeter
Fifth graders engage in the solving of a real life application problem using the concept of calculating perimeter. They apply the operations of calculating with the polynomials for finding the perimeter of triangles,quadrilaterals, and...