4.1 - Solving for Triangle Sides with Algebra

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, each measuring 60 degrees.

Front

How do you find the length of a side in an equilateral triangle?

Back

In an equilateral triangle, since all sides are equal, you can set the expressions for the sides equal to each other and solve for the variable.

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.

Front

How do you solve for a variable in an isosceles triangle?

Back

Set the expressions for the equal sides equal to each other and solve for the variable.

Front

Back

Front

What is the formula for the perimeter of a triangle?

Back

The perimeter of a triangle is the sum of the lengths of its sides: P = a + b + c.

Front

Back

Front

What does it mean for two sides of a triangle to be congruent?

Back

Two sides of a triangle are congruent if they have the same length.

Front

How do you check if a triangle is isosceles?

Back

Check if at least two sides are of equal length.

Front

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

Back

All angles in an equilateral triangle are equal, each measuring 60 degrees.