Ordering Sides and Angles of a Triangle

Front

What is the relationship between the angles and sides of a triangle?

Back

In a triangle, the largest angle is opposite the longest side, and the smallest angle is opposite the shortest side.

Front

How do you order angles in a triangle from smallest to largest?

Back

To order angles from smallest to largest, compare their measures; the angle with the smallest measure comes first.

Front

How do you order sides in a triangle from longest to shortest?

Back

To order sides from longest to shortest, compare their lengths; the side with the longest length comes first.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in any triangle is always 180 degrees.

Front

What is an acute triangle?

Back

An acute triangle is a triangle where all three angles are less than 90 degrees.

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle equal to 90 degrees.

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle where one angle is greater than 90 degrees.

Front

How can you determine if a triangle is scalene?

Back

A scalene triangle has all sides of different lengths and all angles of different measures.

Front

How can you determine if a triangle is isosceles?

Back

An isosceles triangle has at least two sides of equal length and the angles opposite those sides are equal.

Front

How can you determine if a triangle is equilateral?

Back

An equilateral triangle has all three sides of equal length and all angles equal to 60 degrees.