Isosceles & 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

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

Back

The sides opposite the equal angles are also equal in length.

Tags

CCSS.8.G.A.5

Front

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

Back

In an equilateral triangle, all angles are equal and measure 60 degrees.

Tags

CCSS.4.G.A.2

Front

How do you find the measure of an unknown angle in an isosceles triangle?

Back

You can use the equation: 2x + y = 180, where x is the measure of the equal angles and y is the base angle.

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

In an isosceles triangle, if the equal sides are each 5 cm and the base is 6 cm, how do you find the height?

Back

Tags

CCSS.8.G.B.8

Front

What is the Pythagorean theorem?

Back

Tags

CCSS.8.G.B.8

Front

What does it mean for triangles to be congruent?

Back

Triangles are congruent if they have the same size and shape, which means their corresponding sides and angles are equal.

Tags

CCSS.8.G.A.2