Supplementary/Complementary Angles
Which of the following measurements would create a supplementary angle?
40 degrees and 140 degrees
Vertical angles are congruent. True or False?
True
A triangle in which one of the interior angles is 90 degrees
Right
The side lengths of four triangles are given below. Which of the triangles is a scalene triangle?
3 cm, 4 cm, 5 cm
It is possible for a triangle to have two right angles.
False
Which of the following measurements would create a complementary angle?
55 degrees and 35 degrees
Adjacent angles are across from each other. True or false?
False
A triangle whose all three sides have the same length, and all three angles are of the same measures
Equilateral
The angle measures of four different triangles are given below. Which of these is an equilateral triangle?
60, 60, 60
The measure of two sides of a triangle are 5 cm and 6 cm. If the triangle is an isosceles triangle, which could be the measure of the third side?
5 cm
Angles B and W are supplementary. Angle B has a measure of 4x + 16 degrees, and Angle W has a measure of 68 degrees. What is the value of x?
24
Angles Q and R are vertical angles. Angle Q has a measure of 2x + 12 degrees, and Angle R has a measure of 44 degrees. What is the value of x?
16
A triangle having two sides of equal length and two angles of equal measure
Isosceles
In an equilateral triangle, what is the sum of any two of its angles?
120 degrees
The side lengths of four triangles are given below. Which of the triangles is an isosceles triangle?
50 cm, 80 cm, 50 cm
9x + 85 + 10x = 180 degrees.
What is the value of angle 9x?
5
8x and 2x + 72 are vertical angles. What does x equal?
A triangle whose all three sides have different lengths, and all three angles are of different measures
Scalene
What is the perimeter of an equilateral triangle if one of its sides is 8.72 feet long? (round to the nearest hundredths place)
26.16 feet
Can a right triangle also be an isosceles triangle?
Yes
90, 45, 45