A Right Isosceles Triangle is a shape that has one 90° angle. 90 degrees + the other two angles add up to 180 degrees.
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L shape
An acute angle is an angle of a shape under 90 degrees, an angle over 90 degrees is called an obtuse angle. hope this helps!:D
It is a right angle
If the shape is a 4 sided quadrilateral then the 4th angle is: 360-110-90-110 = 50 degrees
Yes, a right angle by definition is an angle of 90 degrees