Answer:
The answers are;
a. None
b. None
c. Infinite
d. None
e. None
Step-by-step explanation:
The number of non congruent triangles that can be drawn depends on the uniqueness of the triangle
The parameters of a unique triangle are;
Knowing the Side Side Side (SSS)
Knowing the Side Angle Side (SAS)
Knowing the Angle Side Angle (ASA)
Knowing the Angle Angle Side (AAS)
However, knowing only the Side Side Angle it is possible to draw two non-congruent triangles
Therefore, considering each of the triangles gives;
a. Sides 7 inches, 8 in., and 16 in. which is of the form SSS hence the triangle is well defined and it is not possible to draw two non-congruent triangle with the provided properties
b. Similarly, the given triangle parameters are 4 in., 4 in., and 6 in. which is of the form SSS hence the triangle is well defined and it is not possible to draw two non-congruent triangle with the provided information
c. The parameters of the triangle given here are angles 30°, 60°, and 90° which is of the form Angle Angle Angle, or AAA for which the sides can be scaled to form an infinite number of non-congruent triangles
d. The parameters given are three angles measuring 120° which does not form a triangle as the sum of triangles in a triangle = 180°
Hence the number of non-congruent triangles that can be drawn in this case = 0
e. The parameters given are two angles measuring 45° and one side length of 10 in., hence the parameter is of the forms AAS or ASA hence the triangle is unique and it is not possible to draw two non-congruent triangle with the provided properties.
