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son4ous [18]
3 years ago
8

What is the measure of each base angle of an isosceles triangle if its vertex angle measures 40° and its 2 congruent sides measu

re  25 units
Mathematics
2 answers:
dmitriy555 [2]3 years ago
5 0
The length of the base angle is triangle
DanielleElmas [232]3 years ago
4 0

Answer:

70 degrees

Step-by-step explanation:

since an isosceles triangle is symmetrical, i cut the triangle in half (vertically) so that it became a right triangle. so the angle sides are now 20 degrees at the top, 90 degrees (right angle, where it was cut), and x degrees. 20 + 90 + x = 180 degrees (total amount of degrees in a right triangle) x = 70 degrees.

hope this helps!

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