2020. 9. 8. 11:47ㆍ카테고리 없음
f) Isosceles triangle, ito base, and its base angles
An isosceles triangle is a triangle that has two sides of
equal length. Sometimes it is specified as having exactly two sides of equal length, and sometimes as having at least two angles of equal degree, the latter version thus including the equilateral triangle as a special case.
g) Equilateral triangle
An equilateral triangle is a triangle in which all three sides are equal In familiar Euclidean geometry, an equilateral triangle is also equiangular ; that is, all three internal angles are also congruent to each other and are each 60
h) Right triangle
A right triangle is a type of triangle that has one angle that measures 90' Right triangles, and the relationship between their sides and angles are the basis of trigonometry. In a right triangle, the side that is opposite of the 90° angle Ys the longest side of the triangle, and is called the hypotenuse,
3. a) The angles of quadrilateral
Since the sum of the interior angles of any triangle is 190" and there are two triangles in a quadrilateral, the sum of the angles for each quadrilateral is 360