Corresponding angles must be equal; in this case, that would be angle f. To prove that the two triangles are equal, you would have to prove that at least another pair of angles is also equal, for example, angle b equal to angle d. Or prove some other facts, like the ratio between certain corresponding sides.
Since the sum of the measures of the angles in a triangle is 180°, and a right angle has a measure of 90°, it follows that the other two angles together have a measure of 90°.
A ruler. Add a line to make the angle into a triangle, measure the sides and use trigonometry.
Because 1 angle will measure 90 degrees and the other 2 angles will each measure 45 degrees
No.
The three internal angles of a triangle always add up to 180 degrees.Two angles of 60 degrees make 120 degrees, leaving a further 60 degrees.
Since the sum of the measures of the angles in a triangle is 180°, and a right angle has a measure of 90°, it follows that the other two angles together have a measure of 90°.
Well, honey, the sum of all angles in a triangle is 180 degrees. So if two angles are already 54 degrees each, the third angle would be 72 degrees to make up the total. It's basic math, darling.
A ruler. Add a line to make the angle into a triangle, measure the sides and use trigonometry.
108 degrees, 54 degrees and what ever it take to make 180. 18 degrees.
yes, it only needs one acute angle out of the three to make it an acute triangle.
Because 1 angle will measure 90 degrees and the other 2 angles will each measure 45 degrees
No.
The three internal angles of a triangle always add up to 180 degrees.Two angles of 60 degrees make 120 degrees, leaving a further 60 degrees.
The Right Triangle. Perpendicular lines make a right angle.
right triangle ( triangles with a right angle)
If it has an obtuse angle
Other than the diagonal side of the right triangle, the other two sides make a perpendicular right angle triangle. The right angle is 90 degrees