It is not important- but if the angles do NOT add up to 180, it is not a triangle.
It's important to remember that a triangle's angles will always total 180 degrees. 180 - 42 - 48 = 90. The last angle is 90 degrees, so this is a right triangle.
180 degrees in a triangle.
It has 180 degrees, but one angle of the triangle has to be 90 degrees
A right angles triangle, as one of the angles in the triangle is 90 degrees.
A right angled scalene triangle
A right-angle triangle
The sum of inner degrees of a triangle is 180 degrees.
An obtuse triangle
No. An acute triangle only has angles less than 90 degrees. A triangle with a 130 degree angle is obtuse.
The question lists three facts: "triangle", "right", and "isosceles". Each fact carries important information. -- "triangle" ... The three angles in any triangle always add up to 180 degrees -- "right" ... One angle in a right triangle must be a right angle = 90 degrees. That leaves the other 90 degrees for the other two angles to share. -- "isosceles" ... Two of the angles in an isosceles triangle are equal. If there are 90 degrees to share between them, then each of them is 45 degrees.
45 degrees is an angle, not a triangle.A triangle containing an angle of 45 degrees can be any kind of triangle except an equilateral triangle.
In total, a triangle has 180 degrees.