Isosceles and equilateral triangles practice

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are of equal length and all three angles measure 60 degrees.

Front

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

Back

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

Front

If two sides of a triangle are equal, what can be said about the angles opposite those sides?

Back

The angles opposite the equal sides are also equal.

Front

What is the measure of each angle in an equilateral triangle?

Back

Each angle in an equilateral triangle measures 60 degrees.

Front

How do you find the length of a side in an isosceles triangle if you know the base and the height?

Back

Use the Pythagorean theorem: a^2 = b^2 + h^2, where 'a' is the length of the equal sides, 'b' is half the base, and 'h' is the height.

Front

What is the relationship between the base angles of an isosceles triangle?

Back

The base angles of an isosceles triangle are equal.

Front

If the base of an isosceles triangle is 10 cm and the equal sides are 12 cm, what is the height?

Back

The height can be found using the Pythagorean theorem, resulting in approximately 9.84 cm.

Front

In an isosceles triangle, if one angle measures 40 degrees, what are the measures of the other two angles?

Back

The other two angles each measure 70 degrees.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula: Area = 1/2 * base * height.