11/14 (12): Properties & Classifying Triangles

Front

What are the properties of triangles?

Back

Triangles have three sides, three angles, and the sum of the interior angles is always 180 degrees.

Front

What is an isosceles triangle?

Back

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

Front

How do you classify triangles based on their angles?

Back

Triangles can be classified as acute (all angles less than 90°), right (one angle equal to 90°), or obtuse (one angle greater than 90°).

Front

What is the relationship between the angles in a triangle?

Back

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

Front

What is the formula for finding the missing angle in a triangle?

Back

To find a missing angle, subtract the sum of the known angles from 180 degrees.

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles whose sum is 90 degrees.

Front

What is the definition of supplementary angles?

Back

Supplementary angles are two angles whose sum is 180 degrees.

Front

How can you find the value of x in a triangle?

Back

You can find x by using the properties of triangles, such as the sum of angles or the relationships between sides.

Front

What is the significance of angle relationships in triangles?

Back

Angle relationships help in solving for unknown angles and in classifying triangles.

Front

What is the definition of a right triangle?

Back

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