Introduction to Triangles

Front

What is an Isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

What is an Equilateral triangle?

Back

A triangle where all three sides are of equal length and all angles are 60 degrees.

Front

What is a Scalene triangle?

Back

A triangle with all sides of different lengths and all angles of different measures.

Front

What is a Right triangle?

Back

A triangle that has one angle measuring 90 degrees.

Front

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

Back

180 degrees.

Front

How do you find the area of a triangle?

Back

Area = 1/2 * base * height.

Front

If one angle of a triangle is 29° and another is 110°, what is the third angle?

Back

The third angle is 41°.

Front

What is the formula for the perimeter of a triangle?

Back

Perimeter = side1 + side2 + side3.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What is a triangle's height?

Back

The perpendicular distance from the base to the opposite vertex.