Which criterion can be used to prove abc and adc are congruent?

Ratio of the heights of two similar cones is 7/9

what is the ratio of their radii? ratio of their volumes??

TIA

If they are similar, the ratio of the radaii is the same.

Now consider that the volume of a cone is 1/3 PI r^2 * h

So the volume ratio will have a (7/9)^2 * 7/9 ratio

Criteria for Congruence of triangles.

Step-by-step explanation:

We are given the triangles ABC and ADC. As clear from the name, the both the triangles have a common side AC.

Criterion that can be used for congruence:

1. SSS

When all the three sides of the triangle is equal to corresponding three sides of other triangle.

2. SAS

When two sides and one angle of triangle is equal to the corresponding sides and angle of other triangle.

3. ASA

When two angles and one side of triangle is equal to the corresponding angles and side of other triangle.

c. ASA

Step-by-step explanation:

D. ASA

Step-by-step explanation:

In triangles ABC and ADC,

So, the triangles ABC and CDA are congruent by ASA postulate.

ASA (Angle-Side-Angle) postulate states that if two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the triangles are congruent.