Triangle Properties Review

Front

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

Back

180 degrees

Front

If angle A is 30 degrees and angle B is 60 degrees, what is angle C?

Back

90 degrees

Front

What is the range of possible lengths for the third side of a triangle with sides of lengths 8 and 10?

Back

2 < x < 18

Front

What do you call a triangle with all sides of different lengths?

Back

Scalene triangle

Front

What do you call a triangle with at least two equal sides?

Back

Isosceles triangle

Front

What is the Pythagorean theorem?

Back

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

Front

If two angles of a triangle are 45 degrees and 55 degrees, what is the third angle?

Back

80 degrees

Front

What is an equilateral triangle?

Back

A triangle with all three sides and angles equal.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height

Front

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

Back

The larger the angle, the longer the opposite side.