If two line crosses, then the vertical angles are the angles opposite each other. In this way, these angles share the same vertex. So, the vertical angles are always equal. Therefore, in this problem, the right answers are:
1. ABE and CBD
Notice that the vertex is B, so these two angles share the same vertex. Accordingly, these two angles are vertical angles.
2. ABC and EBD
The same reasoning is applied here. The vertex is also B. Notice that <em>the angles CBD and ABD add up to 180 degrees. </em>
Answer:
36 minutes
Step-by-step explanation:
360/10=36 (percent is division of the number)
Answer:
b = 15°
Step-by-step explanation:
The base angles (c = ∠QRP) of ΔQPR are such that the sum of angles of the triangle is 180°. Since the triangle isosceles, the base angles are equal:
2c +60 = 180
2c = 120
c = 60 . . . . . . degrees; the base angle of ΔQPR
__
Likewise, the base angle (∠SRP) of ΔSPR is ...
a = (180 -90)/2 = 45 . . . . . degrees
__
The measure of angle b is the difference between the larger and smaller base angles:
b = c -a = 60° -45°
b = 15°
4x^2-9y^2
= (2x)^2 - (3y)^2
<span>=[(2x + 3y)(2x - 3y)]</span>
Answer:
Step-by-step explanation:
(⅚ pound)/(3 people) = (⅚÷3 pound)/person = 5/18 pound per person.