A right angle triangle.
It is a right angle triangle and the 3rd angle will measure 30 degrees
It is 90 degrees
no it does not
No, because a triangle's angles can only measure up to 180 degrees. A right angle is 90 degrees, plus another 100 degree angle would be 190 degrees.
Certainly not, if you measure a right angled triangle the it comes to 90 degrees you only get an obtuse angle if you have OVER 90 degrees.
A right triangle.
since it is a right triangle there is one 90 degree angle and another of the angles is 45 degrees. there is 180 degrees in a triangle so the missing angle is 45 degrees.
The other acute angle in that triangle is 40 degrees.