Cho hình thang cân ABCD, đáy nhỏ AB. Vẽ AH ⊥ CD. Chứng minh rằng DH =
CD − AB/2
.

Write the fraction or mixed number and the decimal shown by the model

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)