Vocabulary&Triangle
Angle Relationships
Figures
100
What is an acute angle?
An angle that measures greater than 0 degrees but less than 90 degrees.
100
What is the value of x in the figure?
x = 5
100
Has 4 sides,4 angles, has 2 pairs of equal sides
Rectangle
200
True or false? A triangle can be both equilateral and isosceles.
True. An equilateral triangle is a special kind of isosceles triangle.
200
What is the value of x in the figure?
x = 24
200
Has no sides, no angles
Circle
300
What is the value of x in the triangle?
x = 130°
300
Which pair of angles are congruent?
Answers: angles 6 and 8 and angles 5 and 7
300
Has 6 sides, 6 angles
Hexagon
400
The sum of the angles in a triangle equal what?
180°
400
Angle 1 and angle 2 are supplementary. If m∠1 = 2x + 50°, and m∠2 = 3x°, what are the measurements of the angles?
m∠1 = 102°
m∠2 = 78°
400
Has 4 equal sides
Square
500
A triangle with one 90° angle is known by what name?
Right triangle
500
Given the figure below, find the values of x, y, and z.
x = 104°
y = 76°
z = 104°
500
Has 5 sides,5 angles
Pentagon