Unique Triangles

Front

What is a unique triangle?

Back

A unique triangle is a triangle that can be formed with a specific set of side lengths or angles, meaning there is only one possible triangle that can be created.

Front

How many triangles can be formed with side lengths of 3 cm, 4 cm, and 5 cm?

Back

Only 1 unique triangle.

Front

What is the Triangle Inequality Theorem?

Back

The Triangle Inequality Theorem states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

Front

Which set of side lengths will NOT make a triangle?

Back

1, 3, 4.

Front

What is the sum of the angles in any triangle?

Back

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

Front

If angle A is 90 degrees, what type of triangle is it?

Back

It is a right triangle.

Front

What is the missing angle if two angles in a triangle are 45° and 47°?

Back

The missing angle is 88°.

Front

Can a triangle have two obtuse angles?

Back

No, a triangle cannot have two obtuse angles because the sum of the angles would exceed 180 degrees.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides are of equal length and all three angles are equal (each measuring 60 degrees).

Front

What is an isosceles triangle?

Back

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