Isosceles Triangles practice

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length, which also means it has at least two equal angles.

Front

What is the property of angles in an isosceles triangle?

Back

In an isosceles triangle, the angles opposite the equal sides are also equal.

Front

How do you find the vertex angle of an isosceles triangle if the base angles are known?

Back

The vertex angle can be found using the formula: Vertex Angle = 180° - 2 * Base Angle.

Front

If one base angle of an isosceles triangle is 40°, what is the measure of the vertex angle?

Back

The vertex angle is 100°.

Front

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

Back

The sum of the interior angles of any triangle is always 180°.

Front

If AE ≅ DE in an isosceles triangle, what can be said about angles A and D?

Back

If AE ≅ DE, then angle A is congruent to angle D.

Front

How do you solve for x in an isosceles triangle problem?

Back

To solve for x, use the properties of isosceles triangles, such as angle relationships and the sum of angles.

Front

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

Back

In an isosceles triangle, the sides opposite the equal angles are equal in length.

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.

Front

How can you determine if a triangle is isosceles based on its side lengths?

Back

A triangle is isosceles if at least two of its side lengths are equal.