Geometry - About Triangles

Which is not a property of Triangles

• They have three sides/edges

• They have three vertices (corners)

• They have three angles

• The interior angles add up to 180

• The interior angles add up to 360

True or False: The vertices of a triangle can be denoted by CAPITAL LETTERS. These letters are used to name triangles.

• A. True

• B. False

_________ is the part of the plane that is limited by the sides of a triangle.

• Surface

• Sides

• Angle

• Base

________ are the line segments that bound a triangle.

• Surface

• Sides

• Angle

• Base

Each part of the plane enclosed between consecutive sides of a triangle is called an ________.

• Surface

• Sides

• Angle

• Base

___________ is the side opposite each vertex.

• Base

• Angle

• Surface

• Sides

________ is the point where two sides of a triangle meet

• Perimeter

• Base

• Surface

• Vortex (Vortices)

_________ is the total measurement of the sides of a triangle.

• Altitude

• Height

• Perimeter

• Vortex

Also called Height, it is a line segment drawn from any one vortex of a triangle perpendicular to the opposite side.

• Perimeter

• Length

• Altitude

• Width

A triangle with all its angles acute is called _______.

• Acute Triangle

• Right Triangle

• Obtuse Triangle