An acute angle of an obtuse isosceles triangle measure 25degree .find ...
Explanation:
Given:
- An acute angle of an obtuse isosceles triangle measures 25 degrees.
Let's solve for the angles of the triangle:
Step 1: Identify the properties of an isosceles triangle:
- An isosceles triangle has two equal sides and two equal angles.
Step 2: Find the base angle of the triangle:
- Since the triangle is obtuse, the base angle will be greater than 90 degrees.
- Let the base angle be x degrees.
- Since the triangle is isosceles, the other base angle will also be x degrees.
Step 3: Use the properties of a triangle to find the base angle:
- The sum of all angles in a triangle is 180 degrees.
- In this case, the acute angle is 25 degrees, and the two base angles are x degrees each.
- Therefore, 25 + x + x = 180.
- Simplifying, we get 25 + 2x = 180.
- Solving for x, we get x = (180 - 25) / 2 = 77.5 degrees.
Step 4: Calculate the angles of the triangle:
- The acute angle is 25 degrees.
- The two base angles are x degrees each, which is 77.5 degrees.
- Therefore, the angles of the triangle are 25 degrees, 77.5 degrees, and 77.5 degrees.
Conclusion:
- The angles of the obtuse isosceles triangle are 25 degrees, 77.5 degrees, and 77.5 degrees.
An acute angle of an obtuse isosceles triangle measure 25degree .find ...
25degree,25degree,130degree
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