Interior And Exterior Of Triangles Flashcards
(24 cards)
What is the boundary of a triangle?
The boundary of a triangle consists of its three sides.
True or False: The interior of a triangle is the space inside the triangle formed by its sides.
True
Fill in the blank: The exterior of a triangle refers to the space _______ the triangle.
outside
What are the three main components of a triangle?
Vertices, sides, and angles.
Which part of a triangle does not include the boundary?
The interior.
Multiple Choice: What is NOT a part of a triangle? A) Vertices B) Sides C) Diagonals
C) Diagonals
True or False: The exterior of a triangle includes points that are neither on the boundary nor in the interior.
True
What do you call the angles formed outside a triangle when a side is extended?
Exterior angles.
Fill in the blank: A triangle has ______ interior angles.
three
What is the sum of the interior angles of a triangle?
180 degrees.
Multiple Choice: The area of the interior of a triangle can be calculated using A) A = 1/2 * base * height B) A = base + height C) A = base * height
A) A = 1/2 * base * height
True or False: All points on the boundary of a triangle are considered part of the interior.
False
What is the relationship between the interior and exterior angles of a triangle?
The exterior angle is equal to the sum of the two opposite interior angles.
Fill in the blank: The interior of a triangle is always ______ than the exterior.
smaller
What defines the vertices of a triangle?
The points where the sides of the triangle meet.
Multiple Choice: Which of the following is NOT a property of triangles? A) They have three sides B) They can have four corners C) They can be classified by angle.
B) They can have four corners
True or False: An equilateral triangle has all sides and angles equal.
True
What is the term for the longest side of a right triangle?
Hypotenuse.
Fill in the blank: A triangle is classified as obtuse if one angle is ______ degrees or more.
greater than 90
What type of triangle has one right angle?
Right triangle.
Multiple Choice: Which triangle has all sides of different lengths? A) Equilateral B) Isosceles C) Scalene
C) Scalene
True or False: The perimeter of a triangle is the sum of the lengths of its sides.
True
What is the term for the area outside a triangle but within a certain distance from its boundary?
Exterior region.
Fill in the blank: The points inside a triangle can be connected to form ______.
smaller triangles.
