Khan Academy
Khan Academy: Area Challenge
Practice solving problems involving triangles, parallelograms, and composite figures. Exercises include decimals, fractions, and word problems. Area of circles is not included. Students receive immediate feedback and have the opportunity...
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice Problems: Quadrilaterals
Practice using your graphing calculator for constructing a parallelogram, a rhombus, a kite, a trapezoid, an isosceles trapezoid, a rectangle, and a square. If you get stumped or if you would like to check your work, then select the View...
CK-12 Foundation
Ck 12: Area and Perimeter of Trapezoids
[Free Registration/Login Required] Students move points on the trapezoid to get the bases and height in order to determine the area and perimeter.
Khan Academy
Khan Academy: Area of Right Triangles
Find the area of right triangles Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Other
Transition Mathematics: Polygons
This site has an extensive definition of a polygon. The definition is followed by multiple-choice questions that ask the student to name specific polygons. There is a link for more questions about polygons.
McGraw Hill
Glencoe Mathematics: Online Study Tools: Special Right Triangles
This site gives a short interactive quiz which allows students to self-assess their understanding of the concept of special right triangles.
Shodor Education Foundation
Shodor Interactivate: Lesson: An Introduction to Quadrilaterals
Quadrilaterals-parallelograms, rectangles, and trapezoids-are thoroughly introduced in this lesson plan for upper elementary and middle school learners. Lots of resources are linked to it to help support the teacher and students....
Math Is Fun
Math Is Fun: Interactive Quadrilaterals
Resize and rotate different types of quadrilaterals--square, rectangle, rhombus, trapezoid, and kite--while learning the definitions of these different shapes and labeling the angles and diagonals. CCSS.Math.Content.3.G.A.1 Understand...
Math Is Fun
Math Is Fun: Area of Triangles Without Right Angles
Learn how to find the area of triangles without right angles. Find the formula to use depending on the information you know about the triangle: base and height, three sides, or two sides and an angle.
Analyze Math
Analyze Math: Rectangle Problems
The geometry tutorial investigates rectangles. Topics included are diagonals, area, and perimeter. The activity has several examples with detailed solutions.
Analyze Math
Analyze Math: Area of Triangles
The geometry resource explores the different formulas used to calculate the area of triangles. The applet investigates the angles and sides of a triangle.
Other
Visnos: Polygons
Create regular and irregular polygons and determine the angles and side lengths with this interactive exercise. Use Safari or Chrome browser.
Khan Academy
Khan Academy: Area of Triangles
Demonstrates the logic behind the formula for the area of a triangle. Includes several practice problems and their explanations.
Khan Academy
Khan Academy: Area of Triangles
Practice finding the area of right, acute, and obtuse triangles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Mathigon
Mathigon: Geometry: Polygons and Polyhedra: Quadrilaterals
This lesson focuses on quadrilaterals which can fall into multiple categories based on the number of sides and the angles.
Illustrative Mathematics
Illustrative Mathematics: 6.g Finding Areas of Polygons
This task presents drawings of polygons on square grids and asks students to calculate their area. They will need to use a few strategies, including decomposing and recombining shapes. Aligns with 6.G.A.1.
CK-12 Foundation
Ck 12: Geometry: Area and Perimeter of Rectangles
[Free Registration/Login may be required to access all resource tools.] In this lesson, students find the perimeter and area of squares and rectangles by using formulas. Students examine guided notes, review guided practice, watch...
BBC
Bbc: Bitesize: Maths: 2 D Shapes
Learn about the properties of 2-D shapes: circles, triangles, polygons, and quadrilaterals. Includes information, video, and examples about each, with games and quizzes for reinforcement.
CK-12 Foundation
Ck 12: Geometry: Triangles and Quadrilaterals Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide reviews the formulas for area and perimeter of triangles and different kinds of quadrilaterals.
CK-12 Foundation
Ck 12: Geometry: Area and Perimeter of Triangles
[Free Registration/Login may be required to access all resource tools.] In this lesson students use formulas and given information to figure out the dimensions and the area of different triangles. Students examine guided notes, review...
Alabama Learning Exchange
Alex: Swimming Pool Math
Young scholars will use a swimming pool example to practice finding perimeter and area of different rectangles.
Better Lesson
Better Lesson: Finding the Area of a Trapezoid
Sixth graders find the area of a trapezoid by decomposing it into triangles and using the formula
Better Lesson
Better Lesson: Geometry Assessment
Sixth graders solve real-world and mathematical problems involving area, volume and surface area.
Better Lesson
Better Lesson: Finding the Area Review and Assessment
Sixth graders find the area of rectangles, triangles, parallelograms, and trapezoids by using formulas or by composing into rectangles or triangles.