A straight angle is a line which has an angle of 180 degrees therefore two right angles (90 degrees) make a line.
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It is an "obtuse angle."Angles that are less than 90 degrees are "acute angles."Angles that are exactly 180 degrees are "straight angles."Angles that are exactly 90 degrees are "right angles."
How many of these 30° angles will fit together to make a straight line?
A 67 degree angle would be acute. Acute angles are smaller that 90 degrees. Right angles are 90 degrees. Obtuse angles are more that 90 degrees. Straight angles are 180 degrees.
A perpendicular bisector is a straight line that divides a side of a triangle in two and is at right angles to that side. An angle bisector is a straight line that divides an angle of a triangle in two.