Angle Pairs
If two angles are complementary and one of them measures 32 degrees, what is the other angle measure?
58 degrees
Half of the diameter represents what in a circle?
Radius
No sides are congruent.
How many angles does a quadrilateral have?
4
Two angles are adjacent. What does that mean?
The two angles are right next to each other.
A line that goes from one edge of a circle to another edge WITHOUT going through the center is called what?
Chord
If two angles in a triangle are 42 degrees and 30 degrees, what is the measure of the third angle?
108 degrees
What is the sum of the angles of a quadrilateral?
360 degrees
If two angles are supplementary, what is the sum of the two angles?
180 degrees
A circle has thee interior angles. One of the angles is 81 degrees and another is 40 degrees. What is the measure of the third angle?
239 degrees
Why can a triangle have 1 obtuse angle at most?
Because the sum of the angles of a triangle are 180 degrees. An obtuse angle is more than 90 meaning the sum of two obtuse angles would be greater than 180.
Define parallelogram.
A quadrilateral with both sets of opposite sides being parallel.
Two angles are complementary and congruent. What are the measures of the two angles?
45 degrees
Half of a circle is called what?
Semicircle
A triangle is obtuse and isosceles. What does this mean?
It has one obtuse angle and two sides are congruent.
Are any trapezoids also squares? Why or why not.
No, a trapezoid has only one set of opposite sides parallel.
Two lines intersect one another to form four angles. What are the angles opposite from one another called?
vertical angles
How many central angles must there be if all the angles are the same measure and one of them measures 10 degrees?
36
A triangle has angle measures of 90 degrees, 45 degrees and 45 degrees. Its side lengths are 3 cm, 5 cm and 3 cm. Classify the triangle by its angles and sides.
Right, isosceles triangle
Name 5 quadrilaterals
square
rectangle
rhombus
parallelogram
quadrilateral