Other
Mathway: Geometric Formulas
Resource provides geometric formulas for area, perimeter, surface area, and volume.
National Council of Teachers of Mathematics
The Math Forum: Find the Area of the Shape!
Try to figure out the area of this challenging shape. In order to view the images, you will need to use JavaSketchpad.
Texas Instruments
Texas Instruments: From Here to There Applications of the Distance Formula
In this activity, students' will use a pair of motion detectors to record the cartesian coordinates of a rod moving in a star-shaped pattern and calculate the distances moved between the vertices of the star. They also compare these...
Geometry Help
Geometry Help: Area of Geometric Shapes
Explains the basic concept of the area of geometric shapes with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
Writing Fix
Writing Fix: Left Brained Writing Prompt: Simple Formula Poems: Diamonte
Diamantes are poems that form a diamond-shape, and they are often about two opposite ideas. Write to topics of your choosing using a DIAMANTE or if you need help with a topic, click on the topic generator for ideas. Really try to include...
George Mason University
Area Formula Lab
In this set of worksheet activities, students will be guided to discover formulas for area of polygonal shapes and circles.
Math Is Fun
Math Is Fun: Area of Plane Shapes
The resource consists of area formulas and diagrams for a variety of shapes.
Mangahigh
Mangahigh: Shape: Speed, Distance and Time Calculations
Test your knowledge of speed, distance, and time formulas.
Government of Alberta
Learn Alberta: Math Interactives: Exploring Composite Figures
Investigate how a variety of shapes can be used to form composite figures using this interactive Learn Alberta math resource. Students will also work on using relevant operations and formulas to figure out the total area of composite...
AAA Math
Aaa Math: Circumference of a Circle
Calculating the circumference or perimeter of a circle has gotten easier with this formula and practice for finding the circumference.
Calculator Soup
Calculator Soup: Geometric Shapes
This reference lists formulas for geometric shape measurements and offers links to online calculators.
Texas Education Agency
Texas Gateway: Estimating Measurements/using Models and Formulas: 3 D Figures
Given application problems involving 3-dimensional figures, the student will estimate measurements, including surface area and/or volume, then solve the problems.
Varsity Tutors
Varsity Tutors: Hotmath: Review: Area
Find a quick, concise explanation of area and the formulas for different shapes. An example is given to help you understand how find the area of a shape. The area formulas are listed for different types of shapes.
ClassFlow
Class Flow: Match Sequences Algebra
[Free Registration/Login Required] In this flipchart, students investigate patterns and sequences used in constructing various shapes using match sticks. Students then develop their introductory algebraic sense by determining the formula...
CK-12 Foundation
Ck 12: Lewis Electron Dot Structures
[Free Registration/Login may be required to access all resource tools.] The following online tutorial describes how a covalent bond forms, including the energy change involved in the process.Students will be asked to use the octet rule...
Oswego City School District
Regents Exam Prep Center: Area of Polygons and Circles
How would you find the area of a polygon or circle? Explore this concept with engaging activities at this test prep site. Here you will find detailed problem solving strategies with accompanying visuals, a reference table with formulas,...
Other
Nearpod: Circles: Area and Circumference
In this instructional activity on circles, 7th graders will learn how to find the area and circumference of circles, semicircles, and compound shapes using formulas.
Oswego City School District
Regents Exam Prep Center: Arcs in Circles
Provided are definitions of arcs in circles, an example and theorems to assist with test preparation.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Rhombus
This is a very brief look at the rhombus, which is a quadrilateral shape with four equal sides. Features include a JavaSketchpad that allows you to manipulate the shape.
Education Development Center
Tune in to Learning: Polygons and Perimeter
Explore different polygons and find their perimeter with this interactive lesson from T.V.411. Students see examples of polygons in everyday life and have immediate feedback to your responses to lesson questions.
ClassFlow
Class Flow: Multilink Sequences Algebra
[Free Registration/Login Required] In this flipchart, students are presented with various shapes made up of a sequence of individual blocks. Students apply reason to predict the number of shapes needed to extend the series.
abcteach
Abcteach: Math Posters
[Free Registration/Login Required] Most of the posters on this site are colorful math posters for primary or elementary school. However, there is one math poster that could be used in secondary school geometry class that has the formulas...
Sophia Learning
Sophia: Coordinate Geometry of Squares: Lesson 2
This lesson will demonstrate how to use slope, midpoint, and distance formulas to determine, from the coordinates of the vertices if a quadrilateral, if the shape is a square in a coordinate plane. It is 2 of 2 in the series titled...