Well, honey, that's a right triangle. It's like a regular triangle, but with a sassy little right angle thrown in there to keep things interesting. So, if you're looking for a shape that's all about that right angle life, you've found it.
a right angle triangle.
A right (angled) triangle.
A right angle triangle
A right triangle has an acute and right angle.
A right angle triangle. (if it is a triangle)
A right angle triangle
A right angle triangle
a 3 sided shape is a right angle triangle
A triangle can have a right angle, but it isn't regular if it does. Rectangles aren't regular, but have four right angles. Squares are regular quadrilaterals, and have four right angles. No other regular polygon has any right angles.
a right angle triangle.
a right triangle
Well, honey, that's a right triangle. It's like a regular triangle, but with a sassy little right angle thrown in there to keep things interesting. So, if you're looking for a shape that's all about that right angle life, you've found it.
A right (angled) triangle.
A Right Triangle or sometimes called a Right-angled Triangle has one angle = 90 degrees
An obtuse triangle.
A right angle triangle.