 or or taken why

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

Don't know
Know
remaining cards
Save
0:01
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size     Small Size show me how

# U 1, Lsn 3 Triangles

### Vocabulary

Alternate Interior Angles Theorem (Alt. Int.) If two parallel lines are cut by a transversal, then each pair of alternate interior angles are congruent
Acute Angle An angle with measure less than 90 degrees
Triangle Sum Theorem The sum of the interior angles of a triangle is 180 degrees
Vertical Angles Angles formed by two crossing lines and have equal measure, they are across from each other
Exterior Angle Angle outside the triangle and have measure equal to the two remote interior angles of the triangle
Centroid A point of concurrency inside the triangle where the three medians meet and is the balancing point of the triangle
Median A line segment that has one end point at the midpoint of a triangle side and connects to the opposite vertex
Midsegment A segment that forms when connecting the two midpoints of two sides of a triangle and has equal measure to 1/2 the parallel side
Isosceles Triangle A triangle with two sides congruent
Congruent Equal shape and size - used to describe geometric figures and concepts (like the word 'equal' is used in regular math)
Opposite Means 'Across from' in math class