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# Geometry

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### Perimeter mixed calculations

- Activity -

Complete the assignments for mixed perimeter calculations.

### Area of a Tapezoid

- Lesson plan -

Find the area of a trapezoid by using compound figures and by deriving the formula for the area of a trapezoid. Find the height given the area.

### Area of Irregular Figures

- Lesson plan -

Find the areas of complex or irregular figures by dividing them into familiar shapes. Find the areas of each shape and sum them to find the total area.

### Nets & Surface Area

- Lesson plan -

Draw nets and find the surface areas of three dimensional figures, including cubes, rectangular prisms and triangular prisms.

### Surface Area of a Cylinder

- Lesson plan -

Discover and create the formula for the surface area of a cylinder. Apply this formula to calculate the surface area of various cylinders.

### Volume of a Cylinder

- Lesson plan -

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

### Measure Angles

- Activity -

Find the angle (in degrees) between two lines.

### Similar Figures

- Lesson plan -

Understand similarity, investigate the ratios and lengths of similar figures, and solve problems using proportions.

### Transformations in the Coordinate Plane

- Lesson plan -

Identify, describe and perform transformations involving translations, reflections, and rotations.

### The Pythagorean Theorem

- Lesson plan -

Look for relationships between the lengths of the sides of a right triangle, leading to the Pythagorean Theorem. Apply the theorem to find the hypotenuse and legs of a right triangle.

### Two & Three Dimensional Shapes

- Lesson plan -

Identify, compare, classify, and analyze attributes of two and three dimensional shapes.

### Congruency & Similarity

- Lesson plan -

Find congruent and similar shapes. Distinguish between congruency and similarity.

### Line Symmetry

- Lesson plan -

Identify and draw lines of symmetry in two-dimensional shapes.

### Flips, Slides, & Turns

- Lesson plan -

Introduce the terms flips, slides, and turns.

### Lines, Rays & Angles

- Lesson plan -

Identify geometric representations for points, lines (horizontal, vertical, diagonal), perpendicular lines, parallel lines, angles, and rays. Recognize real-life examples of point, line, perpendicular lines, and parallel lines.

### Sorting by multiple attributes

- Lesson plan -

Sort items by multiple attributes, or combine attributes to form items in a matrix.