Definition of Base Angle Theorem
More about Base Angle Theorem
Example on Base Angle Theorem
Solved Example on Base Angle Theorem
The length of two congruent sides of a triangle is 6 cm. Which of the following could be the measure of the three angles of the triangle?
A. 108°, 36°, 36°
B. 30°, 90°, 60°
C. 40°, 62°, 78°
D. 42°, 64°, 74°
Correct Answer: A
Step 1: According to the base angle theorem, if two sides of a triangle are congruent, the angles opposite to these sides are also congruent.
Step 2: The length of the two sides of the triangle are congruent, so the angles opposite to these sides would be congruent.
Step 3: So, 108°, 36°, and 36° would be the measures of the three angles of the triangle.
Related Terms for Base Angle Theorem