Download these worksheets to sharpen your geometry skills. Sheets focus on angles, coordinate geometry, triangles, quadrilaterals, transformations, and three-dimensional geometry, and more.

A graph is a collection of nodes and edges that represents relationships. You can use graphs to model a wide variety of systems. View examples of directed and undirected graphs and how they are constructed in this resource.

MathWorld goes into detail about equilateral triangles at this site. Use this site to find out how to construct an equilateral triangle using a compass and straight edge. Learn about the altitude of such triangles, and the rationality of...

Use Cabri Jr to copy an angle. The activity is followed by a student-to-student interview/reflection sheet intended to require students to think, talk, and write about why the construction worked. The reflection sheet could be adapted...

A and B are two distinct points in the plane and line AB is the segment joining them. The goal of this problem is to construct the perpendicular bisector of segment AB. Aligns with G-CO.D.12.

This site explains the possible uses of a compass when drawing. There are numerous exercises for using a compass with links to the solutions - click on the red checkmarks for these. The site discusses mathematicians who contributed to...

This lesson offers an interesting, hands-on experience for middle school students studying cylinders. Students will create cylinders, and measure and compare their volumes.

Biography of Euclid, a Greek Mathematician, also known as the 'Father of Geometry'.

Gives a detailed overview of hexagons, particularly of regular hexagons. Be sure to use the links for unfamiliar notation or variable representation. This site gives formulas for inner radius, circumradius, parameter, and area of a...

Four examples which use the linear regression model in real-world applications. The site continues with discussion on how to correctly construct the regression model, how its results can be analyzed, and what can come from it.

Construct an equation or an inequality that models a given context. Modeling expressions can be quadratic, rational, or exponential. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video,...

The purpose of this task is to explore reflections in the context of paper folding. Each fold is associated with a line of reflection and understanding each step in the construction requires careful analysis of angles and of the...

The goal of this task is to apply knowledge about similar triangles in order to understand an origami construction: trisection of the side of a square. Aligns with G-SRT.B.5.

This activity will help students visualize the construction of congruent triangles and conceptualize properties through measurement and movement of their construction. Students will need access to the TI-84 Plus Family.

You have been asked to place a fire hydrant so that it is an equal distance from three locations on a map. Young scholars must fold a paper so that this point is where two folds intersect, and they must explain why their construction...

This lesson has students discover properties of inscribed angles in a circle. Students use the Geometer's Sketchpad application for the TI-89 to construct a circle and an inscribed angle.

This task applies reflections to a regular hexagon to construct a pattern of six hexagons enclosing a seventh. The focus of the task is on using the properties of reflections to deduce this seven-hexagon pattern. Aligns with G-CO.B.6.

This task builds on a previous one called ''Right triangles inscribed in circles I.'' Here students are asked to construct a tangent line to a circle from a point outside of the circle. Aligns with G-C.A.4.

In this multi-day activity, 3rd graders make 3 different models of an orphanage floor plan using Google Drawing, Virtual Graph paper, and a construction of rectilinear shapes, to calculate the area of each room using units square.

A line plot may not be a useful graph for investigating variation so we must come up with a new representation based on groups of data. Construct a stem and leaf plot from a set of 26 data values.

This applet helps students visualize the shapes of shadows cast by a cube with a light coming from different angles. This helps students visualize shapes from different angles and to identify, sketch and classify the cross-sections of...

See if the King, Queen, or one of their loyal subjects can figure out how to solve the problem of their crummy bridge. This animated video from Math Snacks focuses on using what you know about converting measurements and reading a line...

Find a linear function that represents a real-world relationship that is given verbally. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.

A geometry instructional activity that examines the history and structure of ancient pyramids and engages students in constructing pyramid models. A comprehensive instructional activity that considers students with diverse learning...