Things that are 180 degrees.
The sum of the angles on the same side between two parallel lines.
Parallel lines rules
This a triangle in which all angles are less than 90 degrees
Acute
Closed-four sided shapes that have angles equaling 360 degrees.
Quadrilaterals
Angles less than 90 degrees are
Acute
In an Isosceles triangle, one angle is 130 degrees. What are each of the remaining angles?
50/2 = 25 degrees each
When two angles are side by side on a straight line, they are..........
adjacent.
A triangle in which all angles and sides are equal.
Equilateral
A shape with only one set of a parallel lines.
Trapezoid
Angles greater than 90 degrees but less than 180 degrees are..........
Obtuse
A trapezoid has the measures: 40 degrees, 100 degrees and 100 degrees. What is the 4th measurement?
360-240= 120 degrees.
A straight line is also known as a ...........
straight angle.
A triangle with only one right angle
A right triangle
Shapes whose opposite sides are parallel and opposite angles are equal.
rectangle, rhombus, square, parallelogram
Angles greater than 180 but less than 360 are .........
Reflex angles
A line bisects (cuts a line in half) another line in two. One half of the line makes and acute angle that is 60 degrees. What is the angle measurement of the other part of the line? You can draw a picture if you'd like to.
180-60 = 120 degrees.
Half of a full turn is a straight line and is known as a __________turn.
Half turn.
A triangle that has only one obtuse angle.
An obtuse angle
All sides are equal and parallel. All angles are 90 degrees.
A square.
Straight angles are .............
180 degrees
A rectangle has the angle measurements of 90 degrees. What is the total angle measurements for the entire rectangle?
360 degrees.
(a) 90 x4 -360
(b) all quadrilaterals are 360 degrees
The inside same side angles of a _________are equal to 180 degrees because they are on a straight line.
Trepezoid
A triangle in which two angles are equal.
An isosceles.
An equilateral triangle is a special type of ___________triangle.
Isosceles triangle
Two triangles are the equivalent of________degrees.
360 degrees.
A triangle has the measurements 75 degrees and 30 degrees. What is the third angle measurement?
180 - (75+30)=75
75 degrees