Describe a ratio. Describe a proportion. How are they related? Describe how to solve a proportion. Describe how to check if a proportion is equal. Give 3 examples of each. a ratio is something that compares 2 numbers by division a proportion is an equation that states that 2 ratios are equal they are related because a proportion is the comparison of 2 ratios and a ratio is the comparison of numbers by division. To solve a proportion yo need to cross multiply in order to get x To check if its equal you have to arrange the ratios and see if they are equal.

Describe what it means for two polygons to be similar. What is a scale factor? Give at least 3 examples of each. for two polygons to be similiar it means that they dont have to be the same size, but they have to have the same proportion and they dont have to be the same shape. The scale factor is the multiplier used on each dimesnsion to change one figuure into a smaller figure.

Describe how to find the scale factor for the perimeter and areas of similar figures. Give at least 3 examples of each one. The ratio of the perimeter is the same as the ratio of symetry The ratio of the area is equal to the ratio of symetry

Describe how to use similar triangles to make an indirect measurement. Give at least 3 examples. A method of measurment that uses formulas, similar figures and or proportions. You can use similar triangles as a way of inderect measurment bacause you can use your shade and your height to determine the lenght of a tree or something that you cant measure the common ways.

Describe the right triangle altitude proportionality theorem. Give at least 3 examples. Explain how the proportions can be used to solve real life problems. the right triangle proportionally states that from the altitude to the hypothenuse of a right triangle forms 3 similar triangles. you can use these proportions in real life when you need to crate a ramp or analyze a mountain.

Describe the three trigonometric ratios. Explain how they can be used to solve a right triangle. What does it mean to solve a triangle? Give at least 3 examples of each. How are they used in real life? The sine of an angle is the ratio of the length of the leg opposite the angle to the lenght of the hypotenuse. The cosine of an angle I sthe ratio of the length pf the leg adjacent to the angle to the length of the hypotenuse. The tangent of an angle is the ration of the length of the leg opposite angle to the lenght of the leg adjacent to the angle.

Compare an angle of elevation with an angle of depression. How are each used? Give at least 3 examples of each. Angle of elevation is the angle formed by a horizontal line and a line sight to a point above. Angle of depression is the angle formed by a horizontal line and a line of sight to a point below.