It is a right angle triangle.
Use a "three four five" triangle. Having one leg measure exactly three inches, the other leg exactly four inches, and the hypotenuse measure exactly five inches will yield a ninety degree angle. If you are drawing out the triangle, it may be easier to measure a three inch line using a straightedge and then use a compass to find the point of intersection for the other leg and the hypotenuse.
If none of the three angles of a triangle is ninety degrees, then it is not a right triangle
It is a triangle with 90, 60, and 30 degree angles.
a perometer parallel hicktogon
No, it can't be. 'Acute' means that all the angles are under ninety degrees; therefore, a ninety degree angle would make it impossible to have an acute triangle.
A degree is a measure of rotation, a foot is a measure of distance. These two are incomparable.
I think it is a right triangle.
An obtuse triangle.
45 inches
The combination square is most commonly used in creating miter joints for it can safely and reliably measure ninety degree angles and fourty-five degree angles.
If the compass angle is changed, the entire geometric shape being drawn is different. For example, if a triangle is being drawn, it could change from an obtuse triangle from a ninety degree triangle.
No, in fact no triangle can have two right angles. The sum of all interior angles of any triangle is 180 degrees. All triangles must have three angles. A right angle is 90 degrees. So if a triangle has two ninety degree angles, there would be no third angle. An acute triangle has all three angles less than 90 degrees. The most common acute triangle is the equilateral 60-60-60 degree triangle.