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# Geometry

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### Perimeter

- Lesson plan -

Develop strategies to determine the perimeter of rectangles and plane figures.

### The Distance Between Two Points

- Lesson plan -

Find the distance between two points in the coordinate plane using the Pythagorean Theorem.

### Volume of a Rectangular Prism

- Lesson plan -

Find the volume of a rectangular prism. Solve contextual problems. Find the largest and smallest volume for a piece of luggage.

### Volume of a Cylinder

- Lesson plan -

Find the volume of a cylinder. Solve problems involving the volume. Find the volume of similar cylinders.

- Lesson plan -

Classify quadrilaterals by their sides and by their angles.

### Exploring Symmetry

- Lesson plan -

Classify plane figures according to types of symmetry (line, rotational).

### Solid Figures

- Lesson plan -

Identify solid figures including prisms, pyramids, cones and spheres. Identify the nets of solid figures.

### Use Algebra to Solve Geometry Problems

- Lesson plan -

Use algebra to solve geometry problems. Review angle properties for angles on a straight line, angles in a triangle, complementary, supplementary, interior, exterior and opposite angles.

### Area of a Circle

- Lesson plan -

Derive the formula for the area of a circle. Find the area of a circle given the radius or diameter of a circle.

### Interior & Exterior Angles of a Polygon

- Lesson plan -

Investigating the interior and exterior angles of polygons. Derive the formula for finding the sum of the interior angles of a polygon. Use this to find the interior angles of a regular polygon. Find the sum of the exterior angles of a polygon.

### Practice: Shapes and Colors

- Lesson plan -

Students learn to recognize shapes and colors with six different exercises.

### Flips, Slides, & Turns

- Lesson plan -

Introduce the terms flips, slides, and turns.

### Distributive Property

- Activity -

Use tiling to show in a concrete case that the area of a rectangle with whole-number side lengths a and b + c is the sum of a x b and a x c.

### Map Location

- Activity -

Practice spatial skills by finding the correct image that is taken on a map.

### Angle Properties

- Lesson plan -

Identify, estimate, and measure the angles of plane figures using appropriate tools.

### Units of Measure

- Lesson plan -

Identify, estimate, and measure the angles of plane figures using appropriate tools.