For an isosceles triangle with vertex 46 degrees, the sum of the remaining two base angles is 180-46 = 134 degrees. Base angles are equal because it's isosceles, so each angle is half of their sum. 134/2 = 67 degrees. Thus, any isosceles trapezoid formed inside that isosceles triangle by drawing parallel lines to the triangle's base, will have base angle measures of 67 degrees, which are triangle's base angles.
Depending how you halve it can be a right angle triangle or an isosceles trapezoid
Not true. A triangle with angles of 90, 45 and 45 is a right angled isosceles triangle. If you take a square piece of paper and fold it in half - from corner to corner - you will get this shape.
The triangle will then have 3 angles of 45, 45 and 90 degrees and take the shape of an isosceles right angle triangle.
An isosceles right triangle. Each of the acute angles is 45 degrees. The legs are equal, and each leg is sqrt(2) times half of the length of the hypotenuse.
For an isosceles triangle with vertex 46 degrees, the sum of the remaining two base angles is 180-46 = 134 degrees. Base angles are equal because it's isosceles, so each angle is half of their sum. 134/2 = 67 degrees. Thus, any isosceles trapezoid formed inside that isosceles triangle by drawing parallel lines to the triangle's base, will have base angle measures of 67 degrees, which are triangle's base angles.
Depending how you halve it can be a right angle triangle or an isosceles trapezoid
If two angle bisectors of a triangle are congruent, then the triangle is isosceles. This is because the angle bisectors of a triangle are concurrent and the angle bisectors of a triangle that are congruent divide the opposite sides of the triangle into two equal segments. So if two angle bisectors are congruent, the sides opposite those angles are also equal, making the triangle isosceles.
Not true. A triangle with angles of 90, 45 and 45 is a right angled isosceles triangle. If you take a square piece of paper and fold it in half - from corner to corner - you will get this shape.
you need the apex angle, call it n. Each base angle is one-half of (180 - n)
Its like an isosceles triangle that has been cut in half parrllel to its base
A right angle triangle or an isosceles triangle.
The triangle will then have 3 angles of 45, 45 and 90 degrees and take the shape of an isosceles right angle triangle.
An isosceles right triangle. Each of the acute angles is 45 degrees. The legs are equal, and each leg is sqrt(2) times half of the length of the hypotenuse.
An equilateral triangle.
Perimeter of the isosceles triangle: 16.2+16.2+8.1 = 40.5 cm
It depends on the size of the triangle.It is half the base times height.