ANGLES
TRIANGLES
LINES
100

This type of angle is special and measures 90 degrees.

right angle

100

The Triangle Sum Theorem states that the sum of the interior angles of any triangle is always ___ degrees.

180

100

These types of lines do not extend to infinity and have endpoints. 

segments

200

What type of angle has a measure of 180 degrees?

straight angle

200

What are the two parts that make up a Triangle?

sides & angles

200

Which direction would negative slope lines be pointing?

*Draw it out if needed* 

left side of the coordinate plane

300

To correctly name angles, the ___ must always be the middle letter. 

vertex

300

The Triangle Inequality Theorem states that the sum of the two shorter sides must be _______ than the length of the third side.

greater

300

Perpendicular lines intersect to create 90-degree angles. The slopes of perpendicular lines are the _____ ________.

negative reciprocal