This angle is exactly 90 degrees.
What is a right angle?
How many angles do triangles have?
What is a 3?
How do you find perimeter?
Add up all the sides
This angle is less than 90 degrees.
What are acute angles?
What is the name of a triangle in which the 3 angles are all less than 90 degrees?
What is a acute triangle?
How do you find area of a rectangle?
A=bh
These angles are larger than 90 degrees but smaller than 180 degrees.
What are obtuse angles?
How do you find area of a triangle?
A= 1/2bh
This type of triangle has all 3 angles and all 3 sides congruent
What is a equilateral triangle?
How do you find area of a parallelogram?
A=bh
The sum of the measure of the angles of this shape always equals 180 degrees.
What is a triangle?
How do you find area of a trapezoid?
A=1/2(b1+b2)h