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WorksheetsUnderstanding Angles and Measurements
Total questions: 20
Worksheet time: 10mins
What is the total number of degrees at a point?
360 degrees
270 degrees
90 degrees
180 degrees
If two angles at a point are 30° and 70°, what is the measure of the third angle?
120°
180°
90°
260°
What is the sum of angles on a straight line?
90 degrees
45 degrees
180 degrees
360 degrees
If one angle on a straight line is 120°, what is the measure of the other angle?
30°
60°
150°
90°
Define complementary angles.
Complementary angles are angles that are adjacent to each other.
Complementary angles are two angles that sum to 90 degrees.
Complementary angles are two angles that are equal in measure.
Complementary angles are two angles that sum to 180 degrees.
If one angle is 40°, what is the measure of its complementary angle?
70°
60°
50°
30°
Define supplementary angles.
Supplementary angles are angles that are adjacent to each other.
Supplementary angles are two angles that are equal in measure.
Supplementary angles are two angles that sum to 90 degrees.
Supplementary angles are two angles that sum to 180 degrees.
If one angle is 75°, what is the measure of its supplementary angle?
135°
120°
90°
105°
How many degrees are in a right angle?
90 degrees
45 degrees
120 degrees
60 degrees
Using a protractor, how would you measure a 90° angle?
Align the protractor's baseline with one side of the angle and mark the 90° point.
Draw a line from the protractor's center to the 0° mark and measure the angle from there.
Place the protractor upside down and measure from the other side of the angle.
Align the protractor's baseline with the vertex of the angle and read the measurement directly.
If angle A is 45° and angle B is 45°, what type of angles are they?
reflex angles
obtuse angles
right angles
acute angles
What is the relationship between two angles that add up to 180°?
Vertical angles
Complementary angles
Adjacent angles
Supplementary angles
If angle C is 30° and angle D is 150°, are they complementary or supplementary?
complementary
equal
adjacent
supplementary
If angle A is 45 degree, what is the value of angle B if angle A and B are on a straight line?
135°
180°
90°
45°
If angle E is 60°, what is the measure of angle F if they are complementary?
45°
30°
15°
90°
What do you call two angles that add up to 90°?
Complementary angles
Adjacent angles
Vertical angles
Supplementary angles
If angle G is 110°, what is the measure of angle H if they are supplementary?
60°
70°
90°
100°
What is the measure of an angle that is adjacent to a 90° angle on a straight line?
90°
60°
180°
45°
If angle I is 25°, what is the measure of angle J if they are complementary?
90°
75°
65°
45°
How do you find the measure of an angle using a protractor?
Measure the angle using a ruler instead of a protractor.
Estimate the angle by eye without any tools.
Use a compass to find the angle measurement.
Align the protractor with the angle and read the measurement where the angle intersects the scale.
