Angles
types of angles, vertex and arms of an angle, comparing angles, measuring angles with a protractor, adjacent and vertically opposite angles, angles around a point, angles in triangles and quadrilaterals
Exercises are drawn at random from a large bank - every click gives a different set.
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Problem
Two angles lie next to each other on a straight line (together they form a straight angle). One of them measures 53°. How many degrees is the other?
Problem
The centre of the protractor is at vertex C of angle SCH, and arm CS runs along the base line of the protractor. What is the size of angle SCH?
Problem
Which of the angles in the picture measures about 110°?
Problem
In an isosceles triangle a base angle measures 60°. How many degrees is the angle between the equal sides?
Problem
Two straight lines cross and make four angles. One of them measures 48°. How many degrees is the angle opposite the angle next to the given one?
Problem
How many degrees is two thirds of a right angle?
Problem
Which rays are the arms of angle MEF?
Problem
Two angles of a triangle measure 94° and 21°. How many degrees is the third?
Problem
Two straight lines cross and make four angles. One of them measures 31°. How many degrees is the angle vertically opposite it?
Problem
Three angles measuring 81°, 59° and 80°, together with one unknown angle, share a vertex, do not overlap and make up a full angle. How many degrees is the unknown angle?
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