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### We found 67 resources with the keyterm sides

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2:12
Lesson Planet: Curated OER

#### What are the Legs and Hypotenuse of a Right Triangle?

For Teachers 6th - 10th
What are all the parts of a right triangle called? What makes it a right triangle? Legs? Triangles have legs? Hypotenuse? Pythagorean Theorem? The instructor diagrams and identifies all the parts of a right triangle for you.
5:58
Lesson Planet: Curated OER

#### What is a Triangle?

For Teachers 1st - 5th
Triangles, triangles, triangles. What makes a polygon a triangle? How many types of triangles are there? How do you determine what kind of triangle it is? Watch this video as the teacher explains 'tri' meaning three, making a triangle -...
5:07
Lesson Planet: Curated OER

#### How Do You Find a Missing Side of a Right Triangle Using Cosine?

For Teachers 6th - 11th
Trigonometry? What's trigonometry. Well, something to do with triangles, right? Right! Right triangles! In this problem, find the missing length of one of the sides. So set this up as a ratio: cosine(A) = adjacent side length divided by...
2:49
Lesson Planet: Curated OER

#### How Do You Determine if a Triangle Is a Right Triangle if You Know its Sides?

For Teachers 6th - 10th
Use the Pythagorean Theorem formula to check if this given triangle, with the given lengths of each side, is a right triangle. It's as simple as plugging the given values into the formula and doing the math to see if the solution checks...
Lesson Planet: Curated OER

#### Writing Takes Shape!

For Teachers 4th - 8th
Students read The Greedy Triangle and discuss geometric solids. For this geometry lesson, students list the geo-solids in the world and create a graphic organizer to show where geo-solids exist.
Lesson Planet: Curated OER

#### Corners and Sides

For Teachers 3rd - 4th
In this corners and sides worksheet, students, with a partner, explore and calculate the answers to six word problems that involve a variety of different geometric shapes.
Lesson Planet: Curated OER

#### 2-Dimensional Shapes: Looking at Shapes

For Students 1st - 2nd Standards
Help scholars identify shapes more thoroughly by counting their attributes. They examine eight 2-dimensional shapes, recording the number of sides and corners for each writing the name. Consider creating a class poster together before or...
Lesson Planet: Curated OER

#### 2-Dimensional Shapes: Naming Shapes

For Students 1st - 3rd Standards
Get to know eight shapes by name: square, rectangle, triangle, pentagon, hexagon, and octagon. Young geometers write the correct name below each of these shapes, using a word bank for guidance. Then, they draw two of the shapes (hexagon...
Lesson Planet: Curated OER

#### Congruency

For Students 3rd - 4th Standards
Which triangles are congruent? There are two sets of triangles here for scholars to examine in order to determine which of them are congruent. They use an example and explanatory introduction to guide them through this process. The first...
Lesson Planet: Curated OER

#### Line of Best Fit

For Students 7th - 8th
In this line of best fit instructional activity, learners solve and complete 8 different problems that include plotting and creating their own lines of best fit on a graph. First, they study the samples at the top and plot the ordered...
7:15
Lesson Planet: Curated OER

#### How Do You Classify Triangles?

For Teachers 5th - 10th
Triangles are classified by their angle measurement as well as by the length of their sides. Here are some names that identify the types of triangles: isosceles, equilateral, scalene, obtuse, and acute. Watch this video to learn about...
5:33
Lesson Planet: Curated OER

#### What are Equilateral, Isosceles, and Scalene Triangles?

For Teachers 5th - 8th
Triangles are classified by their angle measurement as well as by the length of their sides. Here are some names that identify the types of triangles: right, isosceles, equilateral, scalene, obtuse, and acute. Watch this video to learn...
5:41
Lesson Planet: Curated OER

#### What is a Polygon?

For Teachers 4th - 8th
What makes a figure a polygon? Does it have three or more sides? Is it a closed figure? If the answer is yes to both of those questions then it's a polygon. But wait! Some of these polygons have special names based on the number of sides...
4:09
Lesson Planet: Curated OER

#### How Do You Find the Length of a Leg of a Right Triangle?

For Teachers 6th - 9th
A right triangle. Two given measurements for two side lengths and one unknown length. Use the Pythagorean theorem to solve this problem and find the missing value. Squares and square roots are used in this problem and don't worry when...
6:22
Lesson Planet: Curated OER

#### How Do You Find Missing Measurements of Similar Figures Using a Proportion?

For Teachers 6th - 8th
Two similar triangles have the same angles, but their legs have different lengths. This means their angles are congruent, and thusly, their corresponding sides are congruent. So there is a missing measurement that needs to be found. Set...
Lesson Planet: Curated OER

#### Understand Categories of Shapes

For Students K - 1st
This colorful set of shapes and figures is the data set learners need to fill out an extensive table. For each of 11 types of shapes or figures they record the quantity and how many corners and sides each has. This becomes more difficult...
Lesson Planet: Curated OER

#### Understanding Categories of Shapes

For Students 2nd - 3rd
What are these shapes? Here are four shapes with some common attributes: they each have four parallel sides and four vertices. Scholars identify a rectangle, rhombus, square, and quadrilateral. Because there is an explanation written...
Lesson Planet: Curated OER

#### Recognize and Draw Shapes

For Students K - 1st
What type of shape is this? Learners practice identifying shape attributes as they name a parallelogram and an oval and count the sides of a cube and a triangle. There are multiple-choice answers for the shape-name questions, so...
Lesson Planet: Curated OER

#### Recognizing Shapes

For Students 1st - 2nd
What are these shapes? Learners examine pairs of six familiar shapes: circle, oval, triangle, hexagon, square, and rectangle. Each pair is placed together because of a common attribute, which is described above. Learners name the shapes...
Lesson Planet: Curated OER

#### Recognize and Draw Shapes

For Students 1st - 2nd
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, cube, and oval....
Lesson Planet: Curated OER

#### Area and Perimeter Quiz

For Teachers 5th - 7th
In this mathematics worksheet, students give the area and perimeter of each polygon illustrated on the sheet. There are six different polygons to measure on the sheet.
Lesson Planet: Curated OER

#### Values of Geometrical Shapes: How Many?

For Students 3rd - 6th
Practice analyzing shapes using this shape breakdown worksheet. Your scholars examine 2 shapes and 2 figures, identifying the number of faces, vertices, edges, and sides each has. The instructions remind students that an answer of "0" is...
Lesson Planet: Curated OER

#### Measurement: Perimeter

For Students 10th
In this perimeter worksheet, 10th graders identify and complete 9 different problems that include determining the perimeter of various figures. First, they complete the table by writing the number of sides in each figure listed on the...
Lesson Planet: Curated OER

#### Symmetry Fun

For Students 7th
In this symmetry worksheet, 7th graders identify and complete 12 different lines of symmetry in polygons. First, they color all of the polygons that have a line of symmetry. Then, students circle all of the regular polygons and use the...