Find the missing term.

the sum of and 7x^2 is 10x^2

a. -3x^2
b. 3x^2

plsss :

In the given triangle, ∠aed ∼ ∠ abc, ad = 6.9, ae = 7.2, de = 5.2, and bc = 10.2. find the measure of bd and ce. round your answer to the nearest tenth.

Are the corresponding angles congruent? explain why or why not.

The figure shows the front side of a metal desk in the shape of a trapezoid. what is the area of this trapezoid? 10 ft²16 ft²32 ft²61 ft²