PLZ HELP ILL GIVE 20 POINTS(5 EACH) Given: ΔABC is a right triangle
∠A is a right angle
m∠B = 45˚
Prove: ∠B ≅ ∠C
What's the statement? And the reason?

Given: m∠X = 4a + 2
m∠Y = 21a + 3
∠X and ∠Y are a linear pair
Prove: ∠Y is an obtuse angle
What's the statement? And the reason?

Given: ∠A and ∠B are complementary angles
∠B and ∠C are complementary angles
Prove: ∠A ≅ ∠C
What's the statement? And reason?

Given: ΔMNP is a right triangle
∠M is a right angle
Prove: ∠N and ∠P are complementary angles
What's the statement? And the reason?

PLZ PLZ PLZ HELP ME ON THIS(ONLY IF U KNOW THEM
WILL GIVE BRAINLIST