Isosceles and Equilateral Triangles

Front

What is an isosceles triangle?

Back

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

Tags

CCSS.4.G.A.2

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 are equal to 60 degrees.

Tags

CCSS.4.G.A.2

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.

Tags

CCSS.8.G.A.5

Front

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

Back

You can use the Pythagorean theorem to find the length of the equal sides by creating a right triangle with the height and half the base.

Tags

CCSS.8.G.B.7

Front

What is the relationship between the angles in an isosceles triangle?

Back

The angles opposite the equal sides are also equal.

Tags

CCSS.HSG.CO.C.10

Front

How do you calculate the measure of an angle in an equilateral triangle?

Back

Each angle in an equilateral triangle measures 60 degrees.

Tags

CCSS.8.G.A.5

Front

What is the formula for the area of a triangle?

Back

The area of a triangle can be calculated using the formula: Area = 1/2 * base * height.

Tags

CCSS.6.G.A.1

Front

What is the definition of the base of a triangle?

Back

The base of a triangle is any one of its sides, often the side on which the triangle is considered to be standing.

Front

How can you determine if a triangle is isosceles using its angles?

Back

If two angles of a triangle are equal, then the triangle is isosceles.

Tags

CCSS.2.G.A.1

Front

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

Back

In a triangle, the larger angle is opposite the longer side, and the smaller angle is opposite the shorter side.

Tags

CCSS.HSG.CO.C.10