### We found 593 reviewed resources for area of a right triangle

Lesson Planet

#### "Grade 9-12, Claim 2 & 4: Problem Solving & Communication Reasoning Supports"

Small but mighty, a collection of three resources features presentation slides that prepare high schoolers for the Smarter Balanced assessment. Claim 2 features problem solving questions drawn from all content areas. Claim 3 focuses on...

Lesson Planet

#### Common Core Math: 8th Grade

Check out the Common Core with a collection that represents all the 8th grade math standards. Most resources engage multiple standards but the main one is listed on the notes section of each tab.

Lesson Planet

#### Find the Area of a Right Triangle

Help your class develop a greater understanding of the area of a right triangle. The video starts by reviewing the area of a rectangle and noting that the rectangle is made up of two congruent triangles. Learners are then shown that in...

Lesson Planet

#### Perimeter and Area of a Right Triangle

Make sure the coordinates are right when calculating distances. Given a right triangle on the coordinate plane, pupils determine the perimeter and the area. The scholars calculate the length of each side using the coordinates of the...

Lesson Planet

#### Triangle Area

While the lesson focuses on right triangles, this activity offers a great way to practice the area of all triangles through an interactive webpage. The activity begins with the class taking a square paper and cutting in in half; can they...

Lesson Planet

#### Finding the Area of an Equilateral Triangle

The problem seems simple: find the area of the equilateral triangle whose sides are each length 1. In fact, this same problem is solved in 8th grade, addressing a different Common Core standard, using the formula for area of a triangle...

EngageNY

#### The Area of Acute Triangles Using Height and Base

Use the height of an acute triangle to create two right triangles. The third lesson in a series of 22 has pupils divide acute triangles into two right triangles. Scholars calculate the areas of the two right triangles and add them...

EngageNY

#### The Area of Right Triangles

Slice and dice area. Pupils cut rectangles in half and determine the area of the resulting right triangles. They use what they discovered to develop a formula to find the area of a right triangle in the second lesson in a 22-part series.

Lesson Planet

#### Study Jams! Area of a Triangle

Even though there is a wide variety of different triangles in the world, knowing a single equation allows us to find the area of each and every one of them. Follow along with this step-by-step presentation as Zoe clearly models how to...

Lesson Planet

#### Interior Designers: Working with Right Triangles

Adding a career application, the resource explores the idea of making squares from the sides of a right triangle to show that the sums are equal. The question refers to designing a mural that leads the class into their own drawing of a...

Lesson Planet

#### Area of a Trapezoid

Here is a straightforward example of how to apply the Pythagorean Theorem to find an unknown side-length of a trapezoid. Commentary gives additional information on proving that the inside of the trapezoid is a rectangle, but is...

Lesson Planet

#### Lyle's Triangles

Try five problems on triangles. Levels A and B focus on shapes that can be created from right triangles. Level C touches upon the relationship between the area of a six-pointed star and the area of each triangle of which it is composed....

Lesson Planet

#### How Do You Find the Area of a Trapezoid?

Trapezoids can be tricky. Break down the process of finding the area of a trapezoid with this video! Viewers are given information about the area formula and shown exactly how to plug in information, solve, and simplify. This is a...

Lesson Planet

#### SAT Prep: Test 1 Section 9 Part 3

If it takes a long time to complete the problems on the math SAT, it doesn't matter if they are correct - the problems that are left over will count against the student's score. Sal takes care to show quicker ways to complete problems...

Lesson Planet

#### Area Measures and Right Triangles

Your class will investigate the relationship among different triangles. This geometry lesson, demonstrates how to make a connection between triangles and the Pythagorean Theorem. They identify the missing side or angle of a triangle.

Lesson Planet

#### Special Right Triangles

Students identify the different parts of a right triangle. In this geometry lesson, students use the Pythagorean Theorem to identify missing sides and angles of a right triangle. They work with irrational and rational roots.

Lesson Planet

#### Finding Areas of Polygons, Variation 1

An exercise in finding the area of polygons by decomposing into triangles and composing into rectangles is the focus of this resource. Make several copies of the worksheet for each participant. Ask learners to use colored pencils to...

Lesson Planet

#### Perimeter and Area of an Obtuse Triangle

Make a coordinated effort to draw an altitude. Using an obtuse triangle plotted on a coordinate plane, scholars determine the perimeter and area of the triangle. after determining the lengths of the sides using the coordinates, learners...

Lesson Planet

#### Circles in Triangles

Challenge the class with inscribed circles in triangles. The assessment task requests class members use their knowledge of circles and right triangles to prove two triangles are congruent. They go on to utilize their knowledge of...

Lesson Planet

#### Squaring the Triangle

Teach budding mathematicians how to square a triangle with an interactive that shows a graphical proof of the Pythagorean Theorem. Pupils alter the lengths of the legs using sliders. Using the inputted lengths, the applet displays the...

Lesson Planet

#### What You Know About the Bermuda Triangle?

Get lost in the classifications. Using the backdrop of the Bermuda Triangle, pupils classify it by angle and side measures. They also learn information about the triangle and its history.

Lesson Planet

#### The Pythagorean Theorem

What special relationship exists among the sides of a right triangle? Explore this relationship using a computer applet, cut-and-paste activity, and video tutorial to develop the Pythagorean Theorem and its significance to right triangles.

EngageNY

#### Surface Area II

The class makes the connection between finding the area of a right prism and a right pyramid in the 23rd installment in a series of 28. The pupils find the surface area of figures created by stacked cubes and prisms with cutouts.

Lesson Planet

#### Area of Right-Angled Triangles

There's a trick to solving the area of a triangle, and it involves a skill your geometers have already mastered. Help them discover the connection between finding a rectangle's area and finding a right triangle's area as they solve for...