19. Given a = [3,-5, 1], b = [−2,4,-1] and [7,3,-2], find = a) b.c b) ax c c) 0, the angle between a and ở d) projab

If 90A180, then A/2 terminates in which quadrant?

The distance between the points (a, b) and (c, d) is ___________. So the distance between (1, 2) and (7, 10) is __________ .

The bisectors of two consecutive angles of HJKL are shown. What can you conclude regarding P?

Which part hypothesis or conclusion of a theorem determines the a Drawing? b Given? c Prove?

Use the protractor with measures as indicted to find ABC

The sum of the measures of all three angles of the triangle in Review Exercise 30 is 180. If the sum of the measures of angles 1 and 2 is more than 130. what can you conclude about the measure of angle 3? 30.

A carpenter has placed a square over an angle in such a manner that ABAC and BDCD. In the drawing, what can you conclude about the location of point D?

A wheel has equally spaced lug bolts. What is the measure of the central angle determined by two consecutive lug bolts if there are a 5 bolts? b 6 bolts?

Given: l1l2l3,AB=5,BC=x,DE=x2,EF=7 Find: x,BC,DE