The height drawn to the base of the isosceles triangle is 4dm, and the lateral side is 80cm
| April 26, 2021 | education
The height drawn to the base of the isosceles triangle is 4dm, and the lateral side is 80cm. Find the corners of the triangle.
An isosceles triangle is a triangle with equal sides. The height drawn to the base is perpendicular, that is, it forms a right angle with the base of the triangle. The height has divided this triangle into two equal right-angled triangles. In these right-angled triangles, the hypotenuse is 80 cm. The leg is 4 dm = = 40 cm, that is, the leg is half the hypotenuse, which means it lies against an angle of 30 degrees. The angles of a triangle add up to 180 degrees. The angles of right-angled triangles are 30, 60, 90 degrees.
Answer: The angles of an isosceles triangle are 30, 30, 120 degrees.
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