Triangle Angle Bisector Theorem

Front

What is the Triangle Angle Bisector Theorem?

Back

The Triangle Angle Bisector Theorem states that the angle bisector of an angle in a triangle divides the opposite side into two segments that are proportional to the lengths of the other two sides.

Tags

CCSS.HSG.CO.C.9

Front

How do you apply the Triangle Angle Bisector Theorem to find missing lengths in a triangle?

Back

To apply the Triangle Angle Bisector Theorem, set up a proportion using the lengths of the segments created by the angle bisector and the lengths of the other two sides of the triangle.

Tags

CCSS.HSG.CO.C.9

Front

If a triangle has sides of lengths 8 and 6, and the angle bisector divides the opposite side into segments of lengths x and y, what is the relationship between x and y?

Back

The relationship is given by the proportion: x/y = 8/6, which simplifies to x/y = 4/3.

Tags

CCSS.HSG.CO.C.9

Front

What is the significance of the angle bisector in a triangle?

Back

The angle bisector is significant because it helps in determining the ratio of the lengths of the sides opposite the angles, which is crucial for solving various geometric problems.

Tags

CCSS.HSG.C.A.3

Front

How can you find the length of a segment created by an angle bisector if you know the lengths of the other two sides?

Back

You can use the Triangle Angle Bisector Theorem to set up a proportion and solve for the unknown length.

Tags

CCSS.HSG.CO.C.9

Front

What is the formula for the length of the angle bisector in a triangle?

Back

The length of the angle bisector can be calculated using the formula: l = (2ab)/(a+b) * cos(C/2), where a and b are the lengths of the sides adjacent to the angle, and C is the angle.

Tags

CCSS.HSG.CO.C.9

Front

In a triangle with sides 10, 14, and an angle bisector dividing the opposite side, how do you find the lengths of the segments?

Back

Set up the proportion based on the lengths of the sides: x/(10 + 14 - x) = 10/14, and solve for x.

Tags

CCSS.HSG.CO.C.9

Front

What is the relationship between the angle bisector and the area of a triangle?

Back

The angle bisector divides the triangle into two smaller triangles that share the same height, allowing for the calculation of areas using the base segments created by the bisector.

Tags

CCSS.HSG.CO.C.9

Front

How does the Triangle Angle Bisector Theorem relate to similar triangles?

Back

The segments created by the angle bisector are proportional to the sides of the triangle, which can lead to the conclusion that the smaller triangles formed are similar to the original triangle.

Tags

CCSS.HSG.CO.C.9

Front

What is the first step in solving a problem using the Triangle Angle Bisector Theorem?

Back

Identify the angle being bisected and the lengths of the sides adjacent to that angle.

Tags

CCSS.HSG.CO.C.9