What is the name of a polygon that has four congruent sides and these angle measures 70,110, 70, 100 ? a. square b. rhombus c. trapezoid d. pentagon

B. Rhombus

Step-by-step explanation:

A rombus has four congruent sides and has 2 equal pairs of angles, the rhombus has 4 equal sidesd that are conected by 4 suplemmentary angles between them, in the end the sum of the inner angles is 360 like in every polygon.

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18. g

20. h 30 degree turn.

21. d 90 degree angles

and also 19 is a. a sphere not a cirlcle

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infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions