Protractor, Inclinometer (often shortened to Clinometer), Theodolite.
You could also add Compass and Sine Bar (though the latter really sets rather than measures an angle).
The 3 interior angles are 90 degrees, 45 degrees and 45 degrees
Yes, congruent angles are angles that have the same measure.
3 angles
Triangles have 3 interior angles that measure 180 degrees total.
The 3 interior angles of any triangle add up to 180 degrees and the 3 exterior angles add up to 360 degrees
The 3 interior angles are 90 degrees, 45 degrees and 45 degrees
Yes, congruent angles are angles that have the same measure.
3 angles
Triangles have 3 interior angles that measure 180 degrees total.
Equaliteral Triangle
All 3 sides are equal in length and each of the 3 interior angles measure 60 degrees
triangle
The 3 interior angles of any triangle add up to 180 degrees and the 3 exterior angles add up to 360 degrees
A decagon will always have its interior angles measure 1480
use a protractor to measure angles
Degrees are used to measure angles.
Angles with the same angle measure are congruent.