Geometry - Chapter 4 Vocabulary

Angle

Formed by two rays joined at a common endpoint

Clinometer

A device used to measure angles of elevation and depression

Conjecture

An educated guess, often written in 'if… then…' form

Hypotenuse

The longest side of a right triangle

Legs (of a right Triangle)

The two sides of a right triangle that form the right angle

Slope Angle

The acute angle a line forms with the x-axis on a coordinate graph

Slope Ratio

A ratio that describes how steep (or flat) a line is

Slope Triangle

A right triangle with legs (parallel to the x- and y-axes) that meet the hypotenuse at two points on a given line or line segment

Tangent Ratio

In a right triangle, it is the ratio of the length of the opposite leg divided by the length of the adjacent leg.

Theta

A Greek letter that is often used to represent the measure of an angle

Trigonometry

Literally, the 'measure of triangles.'