Types of Angles
A 45 degree angle is a/an _____ angle.
Acute angle
An Acute Triangle has _____ acute angles.
3 Acute Angles
What is an Equilateral Triangle?
3 sides are equal
Lines that meet or cross, X
Intersecting lines
An angle that is exactly 90 degrees.
A Right Angle.
An angle that is more than 90 degrees but less than 180 degrees.
Obtuse
Number of right angles in a right triangle.
What is 1?
2 of the sides are equal in this triangle.
Isosceles
What is the sum of the angles of a triangle?
180 degrees
An angle that is greater than 90 degrees.
Obtuse angle
An angle that is equal to 1 degree
Acute Angle
All the sides of the triangle have different lengths.
Scalene triangle
A polygon that has 5 sides.
Pentagon
A quadrilateral that has only one pair of parallel sides.
Trapezoid
This type of angle is 180 degrees.
What is a straight angle?
180 degrees.
What is straight angle?
The number of Acute Angles in a Right Triangle.
Two
The sum of the angles of a quadrilateral.
360 degrees
A line segment that connects the center to any point on the circle.
Radius
The four types of angles in order from largest to smallest.
Straight, Obtuse, Right, and Acute?
Angle A = 90 degrees, Angle B = 50 degrees, What is Angle C = ? These angles are all on a straight line.
Angle C= 40 degrees
A chord that connects two points on the circle and passes through the center of the circle.
Diameter
The formula to find the diameter of a circle.
d = 2 x r
This quadrilateral has 4 equal sides, 2 acute angles, 2 obtuse angles, and the opposite sides are parallel.
Rhombus