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What proves that the angles of a triangle add up to be 180?

Updated: 11/1/2022

Wiki User

∙ 6y ago

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The 3 vertices of a triangle when cut off will tessellate to form a straight line and angles on a straight line add up to 180 degrees or simply use a protractor to measure each angle.

Wiki User

∙ 6y ago

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Wiki User

∙ 6y ago

The parallel postulate proves it.

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Continue Learning about Math & Arithmetic

What do the angles of a rightangle triangle add up to?

The angles of any triangle add up to 180 degrees.

What angles are in a triangle?

There are 3 interior angles in a triangle and they add up to 180 degrees

When can the sum of the angles of a triangle not add up to 180?

The sum of the angles of a triangle MUST add up to 180o.

Angles in a triangle add up to?

The 3 interior angles of any triangle add up to 180 degrees

The angles of a triangle all add up to?

The 3 interior angles of a triangle add up to 180 degrees

Related questions

What is the sum of the angles in a triangle?

The Interior angles of a triangle add up to 180° The Exterior angles of a triangle (or any other polygon) add up to 360°.

Angles in a triangle?

There are 3 angles in a triangle and they add up to 180 degrees

What do all the angles of a triangle add up to?

Sum of angles in a triangle is 180

What do the angles of a rightangle triangle add up to?

The angles of any triangle add up to 180 degrees.

Does a triangle have 3 right angles?

No - the interior angles of a triangle add up to 180°.

What angles are in a triangle?

There are 3 interior angles in a triangle and they add up to 180 degrees

What do three angles in a triangle add up to?

The 3 interior angles of a triangle add up to 180 degrees

The angles to a triangle should add up to how many degrees?

The angles of a triangle add up to 180 degrees.

When can the sum of the angles of a triangle not add up to 180?

The sum of the angles of a triangle MUST add up to 180o.

Angles in a triangle add up to?

The 3 interior angles of any triangle add up to 180 degrees

The angles of a triangle all add up to?

The 3 interior angles of a triangle add up to 180 degrees

What do the interior angles of a triangle add up to and what do the exterior angles add up to?

The interior angles of a triangle add up to 180 degrees. The exterior angles of a triangle add up to 360 degrees.

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What proves that the angles of a triangle add up to be 180?

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