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Answer:
5 and 7
Step-by-step explanation:
5 and 7 are vertical angles. The others are supplementary
Simple interest formula:
Total = principal x (1 + rate x years)
10 years:
Total = 15,000(1+0.04x10)
Total = $21,000
8 years:
Total = 15000(1+0.04x8)
Total = $19,800
Savings = 21,000 - 19,800 = $1,200
Quadrilateral refers to a shape that has four sides. quad means four; lateral means side.
A quadrilateral has the following characteristics.
1) 4 sides or 4 edges
2) 4 vertices or 4 corners
3) the interior angles add up to 360 degrees.
It also is 2-dimensional, all sides are straight, and its lines close.
Examples of quadrilateral shapes are:
1) square
2) rectangle
3) rhombus
4) parallelogram
5) trapezoid
6) kite