Front

What type of triangle has all angles less than 90 degrees?

Back

An acute triangle.

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

What does the congruence statement \(\Delta ABC \cong \Delta DRS\) indicate?

Back

Triangle ABC is congruent to triangle DRS.

Front

If a triangle has one angle greater than 90 degrees, what type of triangle is it?

Back

An obtuse triangle.

Front

What is the term for a triangle with all sides of equal length?

Back

An equilateral triangle.

Front

In triangle congruence, what does SSS stand for?

Back

Side-Side-Side congruence.

Front

If two angles of a triangle are known, how can you find the third angle?

Back

Subtract the sum of the known angles from 180 degrees.

Front

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

Back

The larger the angle, the longer the opposite side.

Front

What is the formula for the area of a triangle?

Back

Area = \(\frac{1}{2} \times base \times height\)

Front

What is the term for a triangle with one right angle?

Back

A right triangle.