Question

Using the Triangle Inequality Theorem (see picture above), determine the length of the third side of the triangle.

side x equals 1 m
side x equals 2 m
side x equals 13 m

Answer 1

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According to the Triangle Angle Sum Theorem, the sum of the inside angles of a triangle must be equal to ?

90 degrees
100 degrees
180 degrees
360 degrees

Answer 2

Two angles of a triangle measure 39.5° and 61.7°. Using the Triangle Angle Sum Theorem, which states that the sum of the inside angles of all triangles must equal 180°, find the measure of the third angle.

68.8°
78.8°
88.8°
98.8°

Answer 3

Use the Triangle Inequality Theorem (see picture above) to solve this problem. Two sides of a triangle measure 11 and 3. Identify the side measure that would NOT create a triangle.

7
9
12
13