Question

$\triangle kln cong \triangle square$ by $square$
10 fill in the blank 9 points
10.
$\triangle abd cong \triangle square$ by $square$

Explanation:

Step1: Identify congruent triangle parts

We know:

• $\angle A = \angle C = 90^\circ$ (right angles)
• $AD = CD$ (marked congruent sides)
• $BD = BD$ (common side, reflexive property)

Step2: Match congruent triangles

$\triangle ABD$ corresponds to $\triangle CBD$ by HL (Hypotenuse-Leg) congruence, since we have two right triangles with congruent hypotenuses and one pair of congruent legs.

Answer:

$\triangle CBD$; HL (Hypotenuse-Leg) Congruence