What is bectographic?

What is the triangle symbol in medical notes? The measure of the first angle of a triangle is 48 degree.the measure of the second angle is 32 degree .what is the measure in degrees of the third angle? What is a triagle with a right angle called? What is a piece of glass with many small parallel lines etched on its surface to produce a spectrum? How many sq yd are in 1 acre? How much does a golden toilet cost? How many right angles are formed by the intersection of two perpendicular great circles on the surface of the sphere? A triangle has a right angle if and only if it is a right triangle? What is the formula for the exterior angle of a regular polygon? A boundless three dimensional set of all points? The surface area of a sphere can be approximated as follows Surface area 4 and pir2 where r is the radius of the sphere and pi is a constant that is roughly equal to 3. Using the simple approximation? How do you get the base of a triangle when you have the height and area? How many 16x16 pavers cover 390 square feet? When curved surfaces are represented on flat surfaces distances are? What are similar figures used in indirect measurement? On a right angled triangle what is the length of the hypotenuse if one side is 500 and the other is 300? Is an arrow a polygon if so why? What is the measurement of the short side and hypotenuse in a 30-60-90 triangle and the length of the long side is 24? How many square feet in 12' x16' room? How many sides is there in a hexagonal prism?